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$120x Astronomical Telescope for Kids & Adults Aperture 400mm refractor Refracting Telescope for Beginners in Astronomy$ $120x Astronomical Telescope for Kids & Adults Aperture 400mm refractor Refracting Telescope for Beginners in Astronomy$

120x Astronomical Telescope for Kids & Adults Aperture 400mm refractor Refracting Telescope for Beginners in Astronomy

$887.98~~$887.98~~

23% off

0.965" 90° Star Diagonal Telescope Diagonal Mirror High Reflection Optical Glass Prism for Refractor Telescope Astronomy Hot Sal

$93.58~~$121.53~~

9% off

$67mm Focuser 0-75mm DIY Refractor Astronomical Telescope 1.25'' Mount Eyepieces$ $67mm Focuser 0-75mm DIY Refractor Astronomical Telescope 1.25'' Mount Eyepieces$

67mm Focuser 0-75mm DIY Refractor Astronomical Telescope 1.25'' Mount Eyepieces

$120.72~~$132.66~~

15% off

$SV535 Astronomical Telescope HD Fully Coated Optics High Magnification Refractor Moon Stargazing Outdoor Astronomy Observation$ $SV535 Astronomical Telescope HD Fully Coated Optics High Magnification Refractor Moon Stargazing Outdoor Astronomy Observation$

SV535 Astronomical Telescope HD Fully Coated Optics High Magnification Refractor Moon Stargazing Outdoor Astronomy Observation

$2100.00~~$2470.59~~

53% off

$Handheld Beer Brix Refractometer Sugar Concentration Meter 0-32% Brix 1.000-1.120 Sugar Tester Brewing Wine Fruits Grapes$ $Handheld Beer Brix Refractometer Sugar Concentration Meter 0-32% Brix 1.000-1.120 Sugar Tester Brewing Wine Fruits Grapes$

Handheld Beer Brix Refractometer Sugar Concentration Meter 0-32% Brix 1.000-1.120 Sugar Tester Brewing Wine Fruits Grapes

$67.25~~$143.31~~

50 sold

9% off

$Laser Machine Silicon Mirror 25 Reflective Lens 20 30 38.1 High-power Refractor Cutting Engraving Machine Accessories$ $Laser Machine Silicon Mirror 25 Reflective Lens 20 30 38.1 High-power Refractor Cutting Engraving Machine Accessories$

Laser Machine Silicon Mirror 25 Reflective Lens 20 30 38.1 High-power Refractor Cutting Engraving Machine Accessories

$171.12~~$188.04~~

33% off

$Yieryi 0~40% Brix 0~25% Alcohol Double Scale Wine Refractometer Handheld Sugar Concentration Meter ATC$ $Yieryi 0~40% Brix 0~25% Alcohol Double Scale Wine Refractometer Handheld Sugar Concentration Meter ATC$

Yieryi 0~40% Brix 0~25% Alcohol Double Scale Wine Refractometer Handheld Sugar Concentration Meter ATC

$11.56~~$17.25~~

45 sold

$Objective Lens Holder Diameter 60Mm Diy Homemade Refractor Astronomical Telescope Abs Plastic$ $Objective Lens Holder Diameter 60Mm Diy Homemade Refractor Astronomical Telescope Abs Plastic$

Objective Lens Holder Diameter 60Mm Diy Homemade Refractor Astronomical Telescope Abs Plastic

$7.99~~$7.99~~

2 sold

15% off

$Telescope Astronomical Professional Refractor 70090 Metal Adjustable Tripod Sky Watcher Telescope With Red Dot Scope$ $Telescope Astronomical Professional Refractor 70090 Metal Adjustable Tripod Sky Watcher Telescope With Red Dot Scope$

Telescope Astronomical Professional Refractor 70090 Metal Adjustable Tripod Sky Watcher Telescope With Red Dot Scope

$3008.60~~$3539.53~~

37% off

D114F450 spherical Parabolic Newtonian reflector lens 35mm Secondary Mirror DIY Homemade astronomical telescope accessories

$62.37~~$99.00~~

2 sold

55% off

$131mm Large Optical Dual Separation Doublet Lens Focal Length 1200 700mm DIY Refractor Telescope Objective Achromatic Lens$ $131mm Large Optical Dual Separation Doublet Lens Focal Length 1200 700mm DIY Refractor Telescope Objective Achromatic Lens$

131mm Large Optical Dual Separation Doublet Lens Focal Length 1200 700mm DIY Refractor Telescope Objective Achromatic Lens

$760.14~~$1689.20~~

1 sold

71% off

$Auto Refractometer Chin Rest Paper Pin Holder Replacement Part Professional Eye Examination Device Support Rod$ $Auto Refractometer Chin Rest Paper Pin Holder Replacement Part Professional Eye Examination Device Support Rod$

Auto Refractometer Chin Rest Paper Pin Holder Replacement Part Professional Eye Examination Device Support Rod

$23.69~~$81.69~~

5% off

$Yieryi 0-40% AdBlue Diesel Exhaust Fluid (DEF) Urea Concentration Refractometer - AUS 32 Car Refractometer$ $Yieryi 0-40% AdBlue Diesel Exhaust Fluid (DEF) Urea Concentration Refractometer - AUS 32 Car Refractometer$

Yieryi 0-40% AdBlue Diesel Exhaust Fluid (DEF) Urea Concentration Refractometer - AUS 32 Car Refractometer

$14.96~~$15.88~~

38 sold

44% off

$Yieryi 4-In-1 Antifreeze Refractometer With ATC Engine Fluid Glycol Point Tester For Car Battery Adblue Detergent Handheld Meter$ $Yieryi 4-In-1 Antifreeze Refractometer With ATC Engine Fluid Glycol Point Tester For Car Battery Adblue Detergent Handheld Meter$

Yieryi 4-In-1 Antifreeze Refractometer With ATC Engine Fluid Glycol Point Tester For Car Battery Adblue Detergent Handheld Meter

$17.84~~$31.85~~

6 sold

41% off

$D61.5/62/63mm Achromatic Cemented Doublet Lens, Green/Blue Coating, Astronomical Telescope Objective Glass Lens DIY Refractor$ $D61.5/62/63mm Achromatic Cemented Doublet Lens, Green/Blue Coating, Astronomical Telescope Objective Glass Lens DIY Refractor$

D61.5/62/63mm Achromatic Cemented Doublet Lens, Green/Blue Coating, Astronomical Telescope Objective Glass Lens DIY Refractor

$96.17~~$163.00~~

25% off

$60mm F220 Achromatic Doublet Lens Cemented Optical Glass Telescope Objective Lens DIY Refractor Telescope Making$ $60mm F220 Achromatic Doublet Lens Cemented Optical Glass Telescope Objective Lens DIY Refractor Telescope Making$

60mm F220 Achromatic Doublet Lens Cemented Optical Glass Telescope Objective Lens DIY Refractor Telescope Making

$155.60~~$208.33~~

21% off

$Celestron AstroMaster 90 AZ Altazimuth Refractor Astronomical Telescope for Children Student Telescope Astronomy Hobby Beginners$ $Celestron AstroMaster 90 AZ Altazimuth Refractor Astronomical Telescope for Children Student Telescope Astronomy Hobby Beginners$

Celestron AstroMaster 90 AZ Altazimuth Refractor Astronomical Telescope for Children Student Telescope Astronomy Hobby Beginners

$13085.58~~$16564.02~~

14% off

$Astronomical Telescope with Goto Apo 127mm Ed Refractor Telescope Maxvision Apochromatic Telescopes Astronomic Professional$ $Astronomical Telescope with Goto Apo 127mm Ed Refractor Telescope Maxvision Apochromatic Telescopes Astronomic Professional$

Astronomical Telescope with Goto Apo 127mm Ed Refractor Telescope Maxvision Apochromatic Telescopes Astronomic Professional

$84465.18~~$98215.32~~

1% off

$40070 70mm Aperture 400mm Focal Length Refractor Astronomical Telescope for Kids and Beginners$ $40070 70mm Aperture 400mm Focal Length Refractor Astronomical Telescope for Kids and Beginners$

40070 70mm Aperture 400mm Focal Length Refractor Astronomical Telescope for Kids and Beginners

$913.37~~$922.60~~

15% off

$D154F750/1200mm,Doublet AchromaticTelescope Objective Lens,Single / Multi Broadband Coating,DIY Astronomical Refractor Accessory$ $D154F750/1200mm,Doublet AchromaticTelescope Objective Lens,Single / Multi Broadband Coating,DIY Astronomical Refractor Accessory$

D154F750/1200mm,Doublet AchromaticTelescope Objective Lens,Single / Multi Broadband Coating,DIY Astronomical Refractor Accessory

$1772.25~~$2085.00~~

19% off

$Portable Lens Measuring Instrument CP-1B Special Optical Instrument Focal Length Meter Refractor Refractometer Manual Rang$ $Portable Lens Measuring Instrument CP-1B Special Optical Instrument Focal Length Meter Refractor Refractometer Manual Rang$

Portable Lens Measuring Instrument CP-1B Special Optical Instrument Focal Length Meter Refractor Refractometer Manual Rang

$1263.60~~$1560.00~~

50% off

$3 in 1 Handheld Refractometer 58-90% Honey Refractometer 12-27% Water Content Detector 38-43°Baume Tester ATC Beekeeping Tester$ $3 in 1 Handheld Refractometer 58-90% Honey Refractometer 12-27% Water Content Detector 38-43°Baume Tester ATC Beekeeping Tester$

3 in 1 Handheld Refractometer 58-90% Honey Refractometer 12-27% Water Content Detector 38-43°Baume Tester ATC Beekeeping Tester

$85.54~~$171.08~~

75 sold

$Refractor 70400 Telescope for Kids and Beginners to View Moon and Planet Refractor Telescope Set$ $Refractor 70400 Telescope for Kids and Beginners to View Moon and Planet Refractor Telescope Set$

Refractor 70400 Telescope for Kids and Beginners to View Moon and Planet Refractor Telescope Set

$495.56~~$495.56~~

$350x Magnification Refractor Telescope, 90mm Large-Aperture Aluminum Alloy Construction, For Professional Astrophotography$ $350x Magnification Refractor Telescope, 90mm Large-Aperture Aluminum Alloy Construction, For Professional Astrophotography$

350x Magnification Refractor Telescope, 90mm Large-Aperture Aluminum Alloy Construction, For Professional Astrophotography

$3027.39~~$3027.39~~

50% off

$3 in 1 Handheld Honey Refractometer Moisture Baume Brix Scale Range 58-90% Sugar Refraction Tester$ $3 in 1 Handheld Honey Refractometer Moisture Baume Brix Scale Range 58-90% Sugar Refraction Tester$

3 in 1 Handheld Honey Refractometer Moisture Baume Brix Scale Range 58-90% Sugar Refraction Tester

$78.91~~$158.13~~

7 sold

21% off

$102MM German Equatorial Refractor Telescope astronomical telescope factory$ $102MM German Equatorial Refractor Telescope astronomical telescope factory$

102MM German Equatorial Refractor Telescope astronomical telescope factory

$12937.99~~$16377.20~~

54% off

CR10 CR20 CR30 Digital Colorimete High-precision Spectrophotometer, Widely Used for Paint, Coating and Fabric Color Inspection

$351.93~~$765.08~~

137 sold

$Manual Phoropter Manual Refractor Refractormeter VISTA Standard Vision Tester Optometry Equipment for Sale$ $Manual Phoropter Manual Refractor Refractormeter VISTA Standard Vision Tester Optometry Equipment for Sale$

Manual Phoropter Manual Refractor Refractormeter VISTA Standard Vision Tester Optometry Equipment for Sale

$8355.64~~$8355.64~~

$Handheld Pet Cat Dog Urine Specific Gravity Refractometer Veterinary 2-14 G / Dl Refractometer Pet Medical Tool ZGRC-300ATC$ $Handheld Pet Cat Dog Urine Specific Gravity Refractometer Veterinary 2-14 G / Dl Refractometer Pet Medical Tool ZGRC-300ATC$

Handheld Pet Cat Dog Urine Specific Gravity Refractometer Veterinary 2-14 G / Dl Refractometer Pet Medical Tool ZGRC-300ATC

$12.56~~$12.56~~

5 sold

54% off

$-60~0℃ Degree Freezing Point Refractometer Battery Automotive Antifreeze Freezing Point Tester -50℃ Propylene Glycol Detection$ $-60~0℃ Degree Freezing Point Refractometer Battery Automotive Antifreeze Freezing Point Tester -50℃ Propylene Glycol Detection$

-60~0℃ Degree Freezing Point Refractometer Battery Automotive Antifreeze Freezing Point Tester -50℃ Propylene Glycol Detection

$106.69~~$231.98~~

10 sold

21% off

$SVBONY SV503 Telescope 70ED F6 Extra Low Dispersion Refractor OTA Micro-Reduction Rap Focuser for Astrophotography,Professional$ $SVBONY SV503 Telescope 70ED F6 Extra Low Dispersion Refractor OTA Micro-Reduction Rap Focuser for Astrophotography,Professional$

SVBONY SV503 Telescope 70ED F6 Extra Low Dispersion Refractor OTA Micro-Reduction Rap Focuser for Astrophotography,Professional

$43482.17~~$55040.72~~

$VisualTech FA-300K Fully 3D Auto Refractometer Keratometer Borderless Touch Screen Optical Self-testing Technology Eye Refractor$ $VisualTech FA-300K Fully 3D Auto Refractometer Keratometer Borderless Touch Screen Optical Self-testing Technology Eye Refractor$

VisualTech FA-300K Fully 3D Auto Refractometer Keratometer Borderless Touch Screen Optical Self-testing Technology Eye Refractor

$42398.44~~$42398.44~~

58% off

$4 in 1 Hand Held Car Refractometer Vehicle 30-35% Adblue Fluid Glycol Urea Tester Battery Antifreeze with ATC$ $4 in 1 Hand Held Car Refractometer Vehicle 30-35% Adblue Fluid Glycol Urea Tester Battery Antifreeze with ATC$

4 in 1 Hand Held Car Refractometer Vehicle 30-35% Adblue Fluid Glycol Urea Tester Battery Antifreeze with ATC

$60.20~~$145.11~~

341 sold

50% off

$9 Inch Touch Screen Auto Refractometer Keratometer ARK-8500 Optomety Measure Device Fast Measurement Stable Optical Equipment$ $9 Inch Touch Screen Auto Refractometer Keratometer ARK-8500 Optomety Measure Device Fast Measurement Stable Optical Equipment$

9 Inch Touch Screen Auto Refractometer Keratometer ARK-8500 Optomety Measure Device Fast Measurement Stable Optical Equipment

$12179.36~~$24358.72~~

1 sold

51% off

$Car Antifreeze Refractometer Ethylene Propylene Glycol 1-1.4 Antifreeze Battery Fluid Hydrometer Glass Freezing Point Tester$ $Car Antifreeze Refractometer Ethylene Propylene Glycol 1-1.4 Antifreeze Battery Fluid Hydrometer Glass Freezing Point Tester$

Car Antifreeze Refractometer Ethylene Propylene Glycol 1-1.4 Antifreeze Battery Fluid Hydrometer Glass Freezing Point Tester

$68.42~~$141.13~~

51 sold

120x Astronomical Telescope for Kids & Adults Aperture 400mm refractor Refracting Telescope for Beginners in Astronomy

$887.98 $887.98

Categories: Tools, Measurement & Analysis Instruments

Buy Now

23% off

0.965" 90° Star Diagonal Telescope Diagonal Mirror High Reflection Optical Glass Prism for Refractor Telescope Astronomy Hot Sal

$93.58 $121.53

Categories: Tools, Measurement & Analysis Instruments

Buy Now

9% off

$67mm Focuser 0-75mm DIY Refractor Astronomical Telescope 1.25'' Mount Eyepieces$ $67mm Focuser 0-75mm DIY Refractor Astronomical Telescope 1.25'' Mount Eyepieces$

67mm Focuser 0-75mm DIY Refractor Astronomical Telescope 1.25'' Mount Eyepieces

$120.72 $132.66

Categories: Tools, Measurement & Analysis Instruments

Buy Now

15% off

SV535 Astronomical Telescope HD Fully Coated Optics High Magnification Refractor Moon Stargazing Outdoor Astronomy Observation

$2100.00 $2470.59

Categories: Tools, Measurement & Analysis Instruments

Buy Now

53% off

Handheld Beer Brix Refractometer Sugar Concentration Meter 0-32% Brix 1.000-1.120 Sugar Tester Brewing Wine Fruits Grapes

$67.25 $143.31

50 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

9% off

Laser Machine Silicon Mirror 25 Reflective Lens 20 30 38.1 High-power Refractor Cutting Engraving Machine Accessories

$171.12 $188.04

Categories: Tools, Measurement & Analysis Instruments

Buy Now

33% off

Yieryi 0~40% Brix 0~25% Alcohol Double Scale Wine Refractometer Handheld Sugar Concentration Meter ATC

$11.56 $17.25

45 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

$Objective Lens Holder Diameter 60Mm Diy Homemade Refractor Astronomical Telescope Abs Plastic$ $Objective Lens Holder Diameter 60Mm Diy Homemade Refractor Astronomical Telescope Abs Plastic$

Objective Lens Holder Diameter 60Mm Diy Homemade Refractor Astronomical Telescope Abs Plastic

$7.99 $7.99

2 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

15% off

Telescope Astronomical Professional Refractor 70090 Metal Adjustable Tripod Sky Watcher Telescope With Red Dot Scope

$3008.60 $3539.53

Categories: Tools, Measurement & Analysis Instruments

Buy Now

37% off

D114F450 spherical Parabolic Newtonian reflector lens 35mm Secondary Mirror DIY Homemade astronomical telescope accessories

$62.37 $99.00

2 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

55% off

131mm Large Optical Dual Separation Doublet Lens Focal Length 1200 700mm DIY Refractor Telescope Objective Achromatic Lens

$760.14 $1689.20

1 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

71% off

Auto Refractometer Chin Rest Paper Pin Holder Replacement Part Professional Eye Examination Device Support Rod

$23.69 $81.69

Categories: Tools, Measurement & Analysis Instruments

Buy Now

5% off

Yieryi 0-40% AdBlue Diesel Exhaust Fluid (DEF) Urea Concentration Refractometer - AUS 32 Car Refractometer

$14.96 $15.88

38 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

44% off

Yieryi 4-In-1 Antifreeze Refractometer With ATC Engine Fluid Glycol Point Tester For Car Battery Adblue Detergent Handheld Meter

$17.84 $31.85

6 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

41% off

D61.5/62/63mm Achromatic Cemented Doublet Lens, Green/Blue Coating, Astronomical Telescope Objective Glass Lens DIY Refractor

$96.17 $163.00

Categories: Tools, Measurement & Analysis Instruments

Buy Now

25% off

60mm F220 Achromatic Doublet Lens Cemented Optical Glass Telescope Objective Lens DIY Refractor Telescope Making

$155.60 $208.33

Categories: Tools, Measurement & Analysis Instruments

Buy Now

21% off

Celestron AstroMaster 90 AZ Altazimuth Refractor Astronomical Telescope for Children Student Telescope Astronomy Hobby Beginners

$13085.58 $16564.02

Categories: Tools, Measurement & Analysis Instruments

Buy Now

14% off

Astronomical Telescope with Goto Apo 127mm Ed Refractor Telescope Maxvision Apochromatic Telescopes Astronomic Professional

$84465.18 $98215.32

Categories: Tools, Measurement & Analysis Instruments

Buy Now

1% off

$40070 70mm Aperture 400mm Focal Length Refractor Astronomical Telescope for Kids and Beginners$ $40070 70mm Aperture 400mm Focal Length Refractor Astronomical Telescope for Kids and Beginners$

40070 70mm Aperture 400mm Focal Length Refractor Astronomical Telescope for Kids and Beginners

$913.37 $922.60

Categories: Tools, Measurement & Analysis Instruments

Buy Now

15% off

D154F750/1200mm,Doublet AchromaticTelescope Objective Lens,Single / Multi Broadband Coating,DIY Astronomical Refractor Accessory

$1772.25 $2085.00

Categories: Tools, Measurement & Analysis Instruments

Buy Now

19% off

Portable Lens Measuring Instrument CP-1B Special Optical Instrument Focal Length Meter Refractor Refractometer Manual Rang

$1263.60 $1560.00

Categories: Tools, Measurement & Analysis Instruments

Buy Now

50% off

3 in 1 Handheld Refractometer 58-90% Honey Refractometer 12-27% Water Content Detector 38-43°Baume Tester ATC Beekeeping Tester

$85.54 $171.08

75 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

$Refractor 70400 Telescope for Kids and Beginners to View Moon and Planet Refractor Telescope Set$ $Refractor 70400 Telescope for Kids and Beginners to View Moon and Planet Refractor Telescope Set$

Refractor 70400 Telescope for Kids and Beginners to View Moon and Planet Refractor Telescope Set

$495.56 $495.56

Categories: Tools, Measurement & Analysis Instruments

Buy Now

350x Magnification Refractor Telescope, 90mm Large-Aperture Aluminum Alloy Construction, For Professional Astrophotography

$3027.39 $3027.39

Categories: Tools, Measurement & Analysis Instruments

Buy Now

50% off

3 in 1 Handheld Honey Refractometer Moisture Baume Brix Scale Range 58-90% Sugar Refraction Tester

$78.91 $158.13

7 sold

Categories: Tools, Measurement & Analysis Instruments

Buy Now

21% off

$102MM German Equatorial Refractor Telescope astronomical telescope factory$ $102MM German Equatorial Refractor Telescope astronomical telescope factory$