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Askar SQA55 f/4.8 Quintuplet air-spaced SD glass Petzval astrograph for astrophotography and daily photography Askar SQA55 f/4.8 Quintuplet air-spaced SD glass Petzval astrograph for astrophotography and daily photography

Askar SQA55 f/4.8 Quintuplet air-spaced SD glass Petzval astrograph for astrophotography and daily photography

$5525.95$5525.95

5 sold
20% off
106 Calibre F600/F900mm Refractive Objective DIY Homemade Astronomical Telescope 106 Calibre F600/F900mm Refractive Objective DIY Homemade Astronomical Telescope

106 Calibre F600/F900mm Refractive Objective DIY Homemade Astronomical Telescope

$487.47$609.34

3 sold
50% off
2pcs K9 Optical Glass Right Angle Triangle Isosceles Prism 9mm 10mm 12mm 15mm 90 Degree Turning Prisms Ray Refraction 2pcs K9 Optical Glass Right Angle Triangle Isosceles Prism 9mm 10mm 12mm 15mm 90 Degree Turning Prisms Ray Refraction

2pcs K9 Optical Glass Right Angle Triangle Isosceles Prism 9mm 10mm 12mm 15mm 90 Degree Turning Prisms Ray Refraction

$51.50$103.00

3 sold
15% off
40 41 42 43 44 46 48mm Doublet Glued Achromatic lens for Refractive Telescope DIY Accessories Objectives green red blue film 40 41 42 43 44 46 48mm Doublet Glued Achromatic lens for Refractive Telescope DIY Accessories Objectives green red blue film

40 41 42 43 44 46 48mm Doublet Glued Achromatic lens for Refractive Telescope DIY Accessories Objectives green red blue film

$126.95$149.35

3 sold
Sun Catcher Light Cube Color Prism Sun Catcher Ornament Glass Cosmic Refraction Crystal Gift Sun Catcher Light Cube Color Prism Sun Catcher Ornament Glass Cosmic Refraction Crystal Gift

Sun Catcher Light Cube Color Prism Sun Catcher Ornament Glass Cosmic Refraction Crystal Gift

$19.36$19.36

5 sold
Built-in LED Light Source Digital Gem Refractometer for Jewelry Gemstone Identification Measure Refractive Index Gems Value 1.81 Built-in LED Light Source Digital Gem Refractometer for Jewelry Gemstone Identification Measure Refractive Index Gems Value 1.81

Built-in LED Light Source Digital Gem Refractometer for Jewelry Gemstone Identification Measure Refractive Index Gems Value 1.81

$319.30$319.30

4 sold
Askar 60F Flat-Field A compact, ultra-portable, and powerful quadruplet self-flattened astrograph. Askar 60F Flat-Field A compact, ultra-portable, and powerful quadruplet self-flattened astrograph.

Askar 60F Flat-Field A compact, ultra-portable, and powerful quadruplet self-flattened astrograph.

$3597.79$3597.79

4 sold
15% off
50mm Refractive HD Achromatic Objective Lens F360/F600 for Astronomical Telescope DIY Accessory Single Blue Coating Spacer Ring 50mm Refractive HD Achromatic Objective Lens F360/F600 for Astronomical Telescope DIY Accessory Single Blue Coating Spacer Ring

50mm Refractive HD Achromatic Objective Lens F360/F600 for Astronomical Telescope DIY Accessory Single Blue Coating Spacer Ring

$77.92$91.67

4 sold
56% off
Digital Brix Refractometer 0-93% Sugar Meter Refractive Index RI Tester Honey Fruit Juice Density Meter Digital Brix Refractometer 0-93% Sugar Meter Refractive Index RI Tester Honey Fruit Juice Density Meter

Digital Brix Refractometer 0-93% Sugar Meter Refractive Index RI Tester Honey Fruit Juice Density Meter

$78.30$177.96

5 sold
30% off
10x42 Long Range HD Binoculars Professional Powerful Hunting Telescope Zoom High Quality Vision Outdoor Camping Bird Watching 10x42 Long Range HD Binoculars Professional Powerful Hunting Telescope Zoom High Quality Vision Outdoor Camping Bird Watching

10x42 Long Range HD Binoculars Professional Powerful Hunting Telescope Zoom High Quality Vision Outdoor Camping Bird Watching

$58.41$83.45

3 sold
50% off
6x18 fixed focus binoculars are light, portable and focus free,Mountain climbing and camping oculares telescopio Binoculares 6x18 fixed focus binoculars are light, portable and focus free,Mountain climbing and camping oculares telescopio Binoculares

6x18 fixed focus binoculars are light, portable and focus free,Mountain climbing and camping oculares telescopio Binoculares

$9.25$18.50

3 sold
50% off
D131F700 D131F1200 Refractive Objective Lens Double Separation with Blue or Green Film HD Astronomical Telescope DIY Accessories D131F700 D131F1200 Refractive Objective Lens Double Separation with Blue or Green Film HD Astronomical Telescope DIY Accessories

D131F700 D131F1200 Refractive Objective Lens Double Separation with Blue or Green Film HD Astronomical Telescope DIY Accessories

$844.60$1689.20

4 sold
15% off
Double-Separated Objective Lens 60-90mm Series: Achromatic Optic for DIY Refracting Telescope Double-Separated Objective Lens 60-90mm Series: Achromatic Optic for DIY Refracting Telescope

Double-Separated Objective Lens 60-90mm Series: Achromatic Optic for DIY Refracting Telescope

$242.51$285.31

4 sold
Professional Ophthalmic Eye Tester Optical Equipment Imitative Retinoscopy Simulation Eye Model for Training And Education Professional Ophthalmic Eye Tester Optical Equipment Imitative Retinoscopy Simulation Eye Model for Training And Education

Professional Ophthalmic Eye Tester Optical Equipment Imitative Retinoscopy Simulation Eye Model for Training And Education

$375.48$375.48

4 sold
35% off
SVBONY SA202 Binoculars,10x42 Binoculars for Adults,Compact FMC Lens,Binoculars with Neck Strap Carrying Bag for Hiking Birding SVBONY SA202 Binoculars,10x42 Binoculars for Adults,Compact FMC Lens,Binoculars with Neck Strap Carrying Bag for Hiking Birding

SVBONY SA202 Binoculars,10x42 Binoculars for Adults,Compact FMC Lens,Binoculars with Neck Strap Carrying Bag for Hiking Birding

$89.91$138.33

3 sold
21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test 21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

$1339.00$1339.00

4 sold
15% off
10/12/13/15/16/17/18/19mm Glued Doublet Achromatic Lens Mini Achromatic Objective Lens Refracting Telescope Optical Accessories 10/12/13/15/16/17/18/19mm Glued Doublet Achromatic Lens Mini Achromatic Objective Lens Refracting Telescope Optical Accessories

10/12/13/15/16/17/18/19mm Glued Doublet Achromatic Lens Mini Achromatic Objective Lens Refracting Telescope Optical Accessories

$56.91$66.95

4 sold
30% off
SVBONY SV407 Mini-Binoculars 2.1x42 Individual Eye Focus Telescope With IPX6 Waterproof for Observing the Moon or Constellations SVBONY SV407 Mini-Binoculars 2.1x42 Individual Eye Focus Telescope With IPX6 Waterproof for Observing the Moon or Constellations

SVBONY SV407 Mini-Binoculars 2.1x42 Individual Eye Focus Telescope With IPX6 Waterproof for Observing the Moon or Constellations

$179.99$257.13

3 sold
40% off
25x25x80mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Children Students Present 25x25x80mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Children Students Present

25x25x80mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Children Students Present

$8.65$14.42

4 sold
New 2026 Latest Edition Ishihara Color Vision Book IB-2 for Color Blindness Deficiency Examination Customized Charts New 2026 Latest Edition Ishihara Color Vision Book IB-2 for Color Blindness Deficiency Examination Customized Charts

New 2026 Latest Edition Ishihara Color Vision Book IB-2 for Color Blindness Deficiency Examination Customized Charts

$240.67$240.67

3 sold
30% off
1PC Metal Ring Insert Trial Refraction Lens Auxiliary Lens 36mm Large Aperture Black Pinhole Maddox Lens Optometry 1PC Metal Ring Insert Trial Refraction Lens Auxiliary Lens 36mm Large Aperture Black Pinhole Maddox Lens Optometry

1PC Metal Ring Insert Trial Refraction Lens Auxiliary Lens 36mm Large Aperture Black Pinhole Maddox Lens Optometry

$25.95$37.07

5 sold
25% off
70mm Series Refractive Achromatic Cemented Doublet Objective Parallel Light Tube Lens Astronomical Telescope DIY 72F700 72F900 70mm Series Refractive Achromatic Cemented Doublet Objective Parallel Light Tube Lens Astronomical Telescope DIY 72F700 72F900

70mm Series Refractive Achromatic Cemented Doublet Objective Parallel Light Tube Lens Astronomical Telescope DIY 72F700 72F900

$140.59$187.46

4 sold
50% off
High Quality Digital Rebound Tonometer Ophthalmic Equipment for Eye Pressure Measurement Reliable Tonometro Pricing SW-1200 High Quality Digital Rebound Tonometer Ophthalmic Equipment for Eye Pressure Measurement Reliable Tonometro Pricing SW-1200

High Quality Digital Rebound Tonometer Ophthalmic Equipment for Eye Pressure Measurement Reliable Tonometro Pricing SW-1200

$9569.49$19138.99

3 sold
50% off
Utf-4880 Optical Trial Lens Frame Fully Pd Adjustable Universal Type Trial Frame Refractive Segments Optometry Utf-4880 Optical Trial Lens Frame Fully Pd Adjustable Universal Type Trial Frame Refractive Segments Optometry

Utf-4880 Optical Trial Lens Frame Fully Pd Adjustable Universal Type Trial Frame Refractive Segments Optometry

$215.56$431.12

4 sold
47% off
30*30*60mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted 30*30*60mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted

30*30*60mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted

$44.06$84.00

3 sold
48% off
Datyson 50 FOV Plossl 32mm Telescope Eyepiece Fully Multi Coated Lens 1.25 Inch Barrel With Front M28X0.6mm Filter Threads Datyson 50 FOV Plossl 32mm Telescope Eyepiece Fully Multi Coated Lens 1.25 Inch Barrel With Front M28X0.6mm Filter Threads

Datyson 50 FOV Plossl 32mm Telescope Eyepiece Fully Multi Coated Lens 1.25 Inch Barrel With Front M28X0.6mm Filter Threads

$150.34$289.12

5 sold
9% off
TBK 2203/2205/2206 Intelligent Laser Welding Machine BGA Rework Machine Laser Desoldering Unsolder Machine for Phone Repair AA TBK 2203/2205/2206 Intelligent Laser Welding Machine BGA Rework Machine Laser Desoldering Unsolder Machine for Phone Repair AA

TBK 2203/2205/2206 Intelligent Laser Welding Machine BGA Rework Machine Laser Desoldering Unsolder Machine for Phone Repair AA

$10451.55$11485.22

3 sold
50% off
6X Enlarged Human Eye Anatomy Model, Eyeball Diseases Study, Teaching Demonstration Prop, Ophthalmology Learning Tool Optic 6X Enlarged Human Eye Anatomy Model, Eyeball Diseases Study, Teaching Demonstration Prop, Ophthalmology Learning Tool Optic

6X Enlarged Human Eye Anatomy Model, Eyeball Diseases Study, Teaching Demonstration Prop, Ophthalmology Learning Tool Optic

$58.04$116.08

3 sold
35% off
Sugar Content Test 0~55% refractive index Refractometer Digital Brix Meter For Fruits/Vegetables/Veverages/Food Processing/Beer Sugar Content Test 0~55% refractive index Refractometer Digital Brix Meter For Fruits/Vegetables/Veverages/Food Processing/Beer

Sugar Content Test 0~55% refractive index Refractometer Digital Brix Meter For Fruits/Vegetables/Veverages/Food Processing/Beer

$26.65$41.00

4 sold
Art Treasure Refractive Lens Flat External IPad Tablet Phone Turning Lens Online Course Lens Art Course Corner Flip Camera Art Treasure Refractive Lens Flat External IPad Tablet Phone Turning Lens Online Course Lens Art Course Corner Flip Camera

Art Treasure Refractive Lens Flat External IPad Tablet Phone Turning Lens Online Course Lens Art Course Corner Flip Camera

$9.50$9.50

4 sold
25% off
90mm DIY Astronomy Telescope Accessories Double Group Self-made Optical Lenses Refractive Glass Achromatic Objective Lens 90mm DIY Astronomy Telescope Accessories Double Group Self-made Optical Lenses Refractive Glass Achromatic Objective Lens

90mm DIY Astronomy Telescope Accessories Double Group Self-made Optical Lenses Refractive Glass Achromatic Objective Lens

$59.99$79.99

4 sold
Instrument For Identifying Genuine and Fake Diamonds Gemstone Refractometer Refractive Index Inspection and Identification Tool Instrument For Identifying Genuine and Fake Diamonds Gemstone Refractometer Refractive Index Inspection and Identification Tool

Instrument For Identifying Genuine and Fake Diamonds Gemstone Refractometer Refractive Index Inspection and Identification Tool

$1040.30$1040.30

3 sold
21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test 21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

$1648.00$1648.00

4 sold
24% off
154mm Double Separation Lenses 154F750mm 154F1200mm Optical Glass Objective Lens Set Refractive Astronomical Telescope DIY 154mm Double Separation Lenses 154F750mm 154F1200mm Optical Glass Objective Lens Set Refractive Astronomical Telescope DIY

154mm Double Separation Lenses 154F750mm 154F1200mm Optical Glass Objective Lens Set Refractive Astronomical Telescope DIY

$1288.49$1695.38

4 sold
47% off
Handheld Honey Moisture Refractometer 10-30% Honey Water Concentration Meter Beekeeping Tool Refraction Tester with ATC Handheld Honey Moisture Refractometer 10-30% Honey Water Concentration Meter Beekeeping Tool Refraction Tester with ATC

Handheld Honey Moisture Refractometer 10-30% Honey Water Concentration Meter Beekeeping Tool Refraction Tester with ATC

$96.14$183.77

4 sold
45 Degree Total Reflection Optical Glass Cylindrical Reflection Prism Physical Experiment Equipment Refraction 45 Degree Total Reflection Optical Glass Cylindrical Reflection Prism Physical Experiment Equipment Refraction

45 Degree Total Reflection Optical Glass Cylindrical Reflection Prism Physical Experiment Equipment Refraction

$9.90$9.90

4 sold
Askar SQA55 f/4.8 Quintuplet air-spaced SD glass Petzval astrograph for astrophotography and daily photography Askar SQA55 f/4.8 Quintuplet air-spaced SD glass Petzval astrograph for astrophotography and daily photography

Askar SQA55 f/4.8 Quintuplet air-spaced SD glass Petzval astrograph for astrophotography and daily photography

$5525.95 $5525.95

5 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
20% off
106 Calibre F600/F900mm Refractive Objective DIY Homemade Astronomical Telescope 106 Calibre F600/F900mm Refractive Objective DIY Homemade Astronomical Telescope

106 Calibre F600/F900mm Refractive Objective DIY Homemade Astronomical Telescope

$487.47 $609.34

3 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
50% off
2pcs K9 Optical Glass Right Angle Triangle Isosceles Prism 9mm 10mm 12mm 15mm 90 Degree Turning Prisms Ray Refraction 2pcs K9 Optical Glass Right Angle Triangle Isosceles Prism 9mm 10mm 12mm 15mm 90 Degree Turning Prisms Ray Refraction

2pcs K9 Optical Glass Right Angle Triangle Isosceles Prism 9mm 10mm 12mm 15mm 90 Degree Turning Prisms Ray Refraction

$51.50 $103.00

3 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
15% off
40 41 42 43 44 46 48mm Doublet Glued Achromatic lens for Refractive Telescope DIY Accessories Objectives green red blue film 40 41 42 43 44 46 48mm Doublet Glued Achromatic lens for Refractive Telescope DIY Accessories Objectives green red blue film

40 41 42 43 44 46 48mm Doublet Glued Achromatic lens for Refractive Telescope DIY Accessories Objectives green red blue film

$126.95 $149.35

3 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
Sun Catcher Light Cube Color Prism Sun Catcher Ornament Glass Cosmic Refraction Crystal Gift Sun Catcher Light Cube Color Prism Sun Catcher Ornament Glass Cosmic Refraction Crystal Gift

Sun Catcher Light Cube Color Prism Sun Catcher Ornament Glass Cosmic Refraction Crystal Gift

$19.36 $19.36

5 sold

Categories: Tools, Measurement & Analysis Instruments

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Built-in LED Light Source Digital Gem Refractometer for Jewelry Gemstone Identification Measure Refractive Index Gems Value 1.81 Built-in LED Light Source Digital Gem Refractometer for Jewelry Gemstone Identification Measure Refractive Index Gems Value 1.81

Built-in LED Light Source Digital Gem Refractometer for Jewelry Gemstone Identification Measure Refractive Index Gems Value 1.81

$319.30 $319.30

4 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
Askar 60F Flat-Field A compact, ultra-portable, and powerful quadruplet self-flattened astrograph. Askar 60F Flat-Field A compact, ultra-portable, and powerful quadruplet self-flattened astrograph.

Askar 60F Flat-Field A compact, ultra-portable, and powerful quadruplet self-flattened astrograph.

$3597.79 $3597.79

4 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
15% off
50mm Refractive HD Achromatic Objective Lens F360/F600 for Astronomical Telescope DIY Accessory Single Blue Coating Spacer Ring 50mm Refractive HD Achromatic Objective Lens F360/F600 for Astronomical Telescope DIY Accessory Single Blue Coating Spacer Ring

50mm Refractive HD Achromatic Objective Lens F360/F600 for Astronomical Telescope DIY Accessory Single Blue Coating Spacer Ring

$77.92 $91.67

4 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
56% off
Digital Brix Refractometer 0-93% Sugar Meter Refractive Index RI Tester Honey Fruit Juice Density Meter Digital Brix Refractometer 0-93% Sugar Meter Refractive Index RI Tester Honey Fruit Juice Density Meter

Digital Brix Refractometer 0-93% Sugar Meter Refractive Index RI Tester Honey Fruit Juice Density Meter

$78.30 $177.96

5 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
30% off
10x42 Long Range HD Binoculars Professional Powerful Hunting Telescope Zoom High Quality Vision Outdoor Camping Bird Watching 10x42 Long Range HD Binoculars Professional Powerful Hunting Telescope Zoom High Quality Vision Outdoor Camping Bird Watching

10x42 Long Range HD Binoculars Professional Powerful Hunting Telescope Zoom High Quality Vision Outdoor Camping Bird Watching

$58.41 $83.45

3 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
50% off
6x18 fixed focus binoculars are light, portable and focus free,Mountain climbing and camping oculares telescopio Binoculares 6x18 fixed focus binoculars are light, portable and focus free,Mountain climbing and camping oculares telescopio Binoculares

6x18 fixed focus binoculars are light, portable and focus free,Mountain climbing and camping oculares telescopio Binoculares

$9.25 $18.50

3 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
50% off
D131F700 D131F1200 Refractive Objective Lens Double Separation with Blue or Green Film HD Astronomical Telescope DIY Accessories D131F700 D131F1200 Refractive Objective Lens Double Separation with Blue or Green Film HD Astronomical Telescope DIY Accessories

D131F700 D131F1200 Refractive Objective Lens Double Separation with Blue or Green Film HD Astronomical Telescope DIY Accessories

$844.60 $1689.20

4 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
15% off
Double-Separated Objective Lens 60-90mm Series: Achromatic Optic for DIY Refracting Telescope Double-Separated Objective Lens 60-90mm Series: Achromatic Optic for DIY Refracting Telescope

Double-Separated Objective Lens 60-90mm Series: Achromatic Optic for DIY Refracting Telescope

$242.51 $285.31

4 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
Professional Ophthalmic Eye Tester Optical Equipment Imitative Retinoscopy Simulation Eye Model for Training And Education Professional Ophthalmic Eye Tester Optical Equipment Imitative Retinoscopy Simulation Eye Model for Training And Education

Professional Ophthalmic Eye Tester Optical Equipment Imitative Retinoscopy Simulation Eye Model for Training And Education

$375.48 $375.48

4 sold

Categories: Tools, Measurement & Analysis Instruments

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35% off
SVBONY SA202 Binoculars,10x42 Binoculars for Adults,Compact FMC Lens,Binoculars with Neck Strap Carrying Bag for Hiking Birding SVBONY SA202 Binoculars,10x42 Binoculars for Adults,Compact FMC Lens,Binoculars with Neck Strap Carrying Bag for Hiking Birding

SVBONY SA202 Binoculars,10x42 Binoculars for Adults,Compact FMC Lens,Binoculars with Neck Strap Carrying Bag for Hiking Birding

$89.91 $138.33

3 sold

Categories: Tools, Measurement & Analysis Instruments

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21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test 21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

$1339.00 $1339.00

4 sold

Categories: Tools, Measurement & Analysis Instruments

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15% off
10/12/13/15/16/17/18/19mm Glued Doublet Achromatic Lens Mini Achromatic Objective Lens Refracting Telescope Optical Accessories 10/12/13/15/16/17/18/19mm Glued Doublet Achromatic Lens Mini Achromatic Objective Lens Refracting Telescope Optical Accessories

10/12/13/15/16/17/18/19mm Glued Doublet Achromatic Lens Mini Achromatic Objective Lens Refracting Telescope Optical Accessories

$56.91 $66.95

4 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
30% off
SVBONY SV407 Mini-Binoculars 2.1x42 Individual Eye Focus Telescope With IPX6 Waterproof for Observing the Moon or Constellations SVBONY SV407 Mini-Binoculars 2.1x42 Individual Eye Focus Telescope With IPX6 Waterproof for Observing the Moon or Constellations

SVBONY SV407 Mini-Binoculars 2.1x42 Individual Eye Focus Telescope With IPX6 Waterproof for Observing the Moon or Constellations

$179.99 $257.13

3 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now
40% off
25x25x80mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Children Students Present 25x25x80mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Children Students Present

25x25x80mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Children Students Present

$8.65 $14.42

4 sold

Categories: Tools, Measurement & Analysis Instruments

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New 2026 Latest Edition Ishihara Color Vision Book IB-2 for Color Blindness Deficiency Examination Customized Charts New 2026 Latest Edition Ishihara Color Vision Book IB-2 for Color Blindness Deficiency Examination Customized Charts

New 2026 Latest Edition Ishihara Color Vision Book IB-2 for Color Blindness Deficiency Examination Customized Charts

$240.67 $240.67

3 sold

Categories: Tools, Measurement & Analysis Instruments

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30% off
1PC Metal Ring Insert Trial Refraction Lens Auxiliary Lens 36mm Large Aperture Black Pinhole Maddox Lens Optometry 1PC Metal Ring Insert Trial Refraction Lens Auxiliary Lens 36mm Large Aperture Black Pinhole Maddox Lens Optometry

1PC Metal Ring Insert Trial Refraction Lens Auxiliary Lens 36mm Large Aperture Black Pinhole Maddox Lens Optometry

$25.95 $37.07

5 sold

Categories: Tools, Measurement & Analysis Instruments

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25% off
70mm Series Refractive Achromatic Cemented Doublet Objective Parallel Light Tube Lens Astronomical Telescope DIY 72F700 72F900 70mm Series Refractive Achromatic Cemented Doublet Objective Parallel Light Tube Lens Astronomical Telescope DIY 72F700 72F900

70mm Series Refractive Achromatic Cemented Doublet Objective Parallel Light Tube Lens Astronomical Telescope DIY 72F700 72F900

$140.59 $187.46

4 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
High Quality Digital Rebound Tonometer Ophthalmic Equipment for Eye Pressure Measurement Reliable Tonometro Pricing SW-1200 High Quality Digital Rebound Tonometer Ophthalmic Equipment for Eye Pressure Measurement Reliable Tonometro Pricing SW-1200

High Quality Digital Rebound Tonometer Ophthalmic Equipment for Eye Pressure Measurement Reliable Tonometro Pricing SW-1200

$9569.49 $19138.99

3 sold

Categories: Tools, Measurement & Analysis Instruments

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Utf-4880 Optical Trial Lens Frame Fully Pd Adjustable Universal Type Trial Frame Refractive Segments Optometry Utf-4880 Optical Trial Lens Frame Fully Pd Adjustable Universal Type Trial Frame Refractive Segments Optometry

Utf-4880 Optical Trial Lens Frame Fully Pd Adjustable Universal Type Trial Frame Refractive Segments Optometry

$215.56 $431.12

4 sold

Categories: Tools, Measurement & Analysis Instruments

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47% off
30*30*60mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted 30*30*60mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted

30*30*60mm Triangular Prism BK7 Optical Prisms Glass Physics Teaching Refracted

$44.06 $84.00

3 sold

Categories: Tools, Measurement & Analysis Instruments

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48% off
Datyson 50 FOV Plossl 32mm Telescope Eyepiece Fully Multi Coated Lens 1.25 Inch Barrel With Front M28X0.6mm Filter Threads Datyson 50 FOV Plossl 32mm Telescope Eyepiece Fully Multi Coated Lens 1.25 Inch Barrel With Front M28X0.6mm Filter Threads

Datyson 50 FOV Plossl 32mm Telescope Eyepiece Fully Multi Coated Lens 1.25 Inch Barrel With Front M28X0.6mm Filter Threads

$150.34 $289.12

5 sold

Categories: Tools, Measurement & Analysis Instruments

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9% off
TBK 2203/2205/2206 Intelligent Laser Welding Machine BGA Rework Machine Laser Desoldering Unsolder Machine for Phone Repair AA TBK 2203/2205/2206 Intelligent Laser Welding Machine BGA Rework Machine Laser Desoldering Unsolder Machine for Phone Repair AA

TBK 2203/2205/2206 Intelligent Laser Welding Machine BGA Rework Machine Laser Desoldering Unsolder Machine for Phone Repair AA

$10451.55 $11485.22

3 sold

Categories: Tools, Measurement & Analysis Instruments

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6X Enlarged Human Eye Anatomy Model, Eyeball Diseases Study, Teaching Demonstration Prop, Ophthalmology Learning Tool Optic 6X Enlarged Human Eye Anatomy Model, Eyeball Diseases Study, Teaching Demonstration Prop, Ophthalmology Learning Tool Optic

6X Enlarged Human Eye Anatomy Model, Eyeball Diseases Study, Teaching Demonstration Prop, Ophthalmology Learning Tool Optic

$58.04 $116.08

3 sold

Categories: Tools, Measurement & Analysis Instruments

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Sugar Content Test 0~55% refractive index Refractometer Digital Brix Meter For Fruits/Vegetables/Veverages/Food Processing/Beer Sugar Content Test 0~55% refractive index Refractometer Digital Brix Meter For Fruits/Vegetables/Veverages/Food Processing/Beer

Sugar Content Test 0~55% refractive index Refractometer Digital Brix Meter For Fruits/Vegetables/Veverages/Food Processing/Beer

$26.65 $41.00

4 sold

Categories: Tools, Measurement & Analysis Instruments

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Art Treasure Refractive Lens Flat External IPad Tablet Phone Turning Lens Online Course Lens Art Course Corner Flip Camera Art Treasure Refractive Lens Flat External IPad Tablet Phone Turning Lens Online Course Lens Art Course Corner Flip Camera

Art Treasure Refractive Lens Flat External IPad Tablet Phone Turning Lens Online Course Lens Art Course Corner Flip Camera

$9.50 $9.50

4 sold

Categories: Tools, Measurement & Analysis Instruments

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90mm DIY Astronomy Telescope Accessories Double Group Self-made Optical Lenses Refractive Glass Achromatic Objective Lens 90mm DIY Astronomy Telescope Accessories Double Group Self-made Optical Lenses Refractive Glass Achromatic Objective Lens

90mm DIY Astronomy Telescope Accessories Double Group Self-made Optical Lenses Refractive Glass Achromatic Objective Lens

$59.99 $79.99

4 sold

Categories: Tools, Measurement & Analysis Instruments

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Instrument For Identifying Genuine and Fake Diamonds Gemstone Refractometer Refractive Index Inspection and Identification Tool Instrument For Identifying Genuine and Fake Diamonds Gemstone Refractometer Refractive Index Inspection and Identification Tool

Instrument For Identifying Genuine and Fake Diamonds Gemstone Refractometer Refractive Index Inspection and Identification Tool

$1040.30 $1040.30

3 sold

Categories: Tools, Measurement & Analysis Instruments

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21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test 21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

21.5 Inch Optometry LCD Visual Acuity Vision Chart - Optical Refraction Testing LCD Monitor for Eye Refraction Test

$1648.00 $1648.00

4 sold

Categories: Tools, Measurement & Analysis Instruments

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154mm Double Separation Lenses 154F750mm 154F1200mm Optical Glass Objective Lens Set Refractive Astronomical Telescope DIY 154mm Double Separation Lenses 154F750mm 154F1200mm Optical Glass Objective Lens Set Refractive Astronomical Telescope DIY

154mm Double Separation Lenses 154F750mm 154F1200mm Optical Glass Objective Lens Set Refractive Astronomical Telescope DIY

$1288.49 $1695.38

4 sold

Categories: Tools, Measurement & Analysis Instruments

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47% off
Handheld Honey Moisture Refractometer 10-30% Honey Water Concentration Meter Beekeeping Tool Refraction Tester with ATC Handheld Honey Moisture Refractometer 10-30% Honey Water Concentration Meter Beekeeping Tool Refraction Tester with ATC

Handheld Honey Moisture Refractometer 10-30% Honey Water Concentration Meter Beekeeping Tool Refraction Tester with ATC

$96.14 $183.77

4 sold

Categories: Tools, Measurement & Analysis Instruments

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45 Degree Total Reflection Optical Glass Cylindrical Reflection Prism Physical Experiment Equipment Refraction 45 Degree Total Reflection Optical Glass Cylindrical Reflection Prism Physical Experiment Equipment Refraction

45 Degree Total Reflection Optical Glass Cylindrical Reflection Prism Physical Experiment Equipment Refraction

$9.90 $9.90

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Categories: Tools, Measurement & Analysis Instruments

Buy Now