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Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

$5.95$5.95

2 sold
50% off
Vintage Magnifier Pendant Necklace 5X Magnifying Glass Jewelry Hanging Loupe with 42mm Lens 45cm Chain for Ladies Elder Reading Vintage Magnifier Pendant Necklace 5X Magnifying Glass Jewelry Hanging Loupe with 42mm Lens 45cm Chain for Ladies Elder Reading

Vintage Magnifier Pendant Necklace 5X Magnifying Glass Jewelry Hanging Loupe with 42mm Lens 45cm Chain for Ladies Elder Reading

$73.38$146.76

1 sold
18% off
1pc 2.5-42mm Adjustable Zoom Iris Diaphragm Aperture Condenser for Digital Camera Microscope Concentrator with 18pcs Blades 1pc 2.5-42mm Adjustable Zoom Iris Diaphragm Aperture Condenser for Digital Camera Microscope Concentrator with 18pcs Blades

1pc 2.5-42mm Adjustable Zoom Iris Diaphragm Aperture Condenser for Digital Camera Microscope Concentrator with 18pcs Blades

$24.59$29.99

2 sold
31% off
1pc 42mm Optical PMMA Plastic Fresnel Lens Condensing Solar Focus Fresnel Lens Focal Length 24/28/35/40/50/60/70/80mm 1pc 42mm Optical PMMA Plastic Fresnel Lens Condensing Solar Focus Fresnel Lens Focal Length 24/28/35/40/50/60/70/80mm

1pc 42mm Optical PMMA Plastic Fresnel Lens Condensing Solar Focus Fresnel Lens Focal Length 24/28/35/40/50/60/70/80mm

$1.99$2.88

4 sold
10% off
Optical Glass Plano Convex Lens Diameter 42mm Focal Length 40mm K9 Magnifying Glass

Optical Glass Plano Convex Lens Diameter 42mm Focal Length 40mm K9 Magnifying Glass

$3.59$3.99

4 sold
37% off
2PCS PMMA Plano convex lens Dia 42mm Focal length 75mm 4x magnifying glass magnifier lens 2PCS PMMA Plano convex lens Dia 42mm Focal length 75mm 4x magnifying glass magnifier lens

2PCS PMMA Plano convex lens Dia 42mm Focal length 75mm 4x magnifying glass magnifier lens

$1.25$1.99

4 sold
8% off
Proscope M42 x1 Male to M58 x1mm Female 42mm-58mm Male Thread Adapter For Helicoids Proscope M42 x1 Male to M58 x1mm Female 42mm-58mm Male Thread Adapter For Helicoids

Proscope M42 x1 Male to M58 x1mm Female 42mm-58mm Male Thread Adapter For Helicoids

$10.76$11.70

4 sold
0.7x 0.5X 2.0X Barlow Auxiliary Objective Glass Lens for 10A 180X 300X C-MOUNT Lens Industry Video Microscope Camera 42mm 0.7x 0.5X 2.0X Barlow Auxiliary Objective Glass Lens for 10A 180X 300X C-MOUNT Lens Industry Video Microscope Camera 42mm

0.7x 0.5X 2.0X Barlow Auxiliary Objective Glass Lens for 10A 180X 300X C-MOUNT Lens Industry Video Microscope Camera 42mm

$15.98$15.98

2 sold
1/8'' NPT Thread 42mm Air Compressor Pneumatic Hydraulic Fluid Pressure Gauge Meter Manometer 0-12Bar / 0-180PSI 1/8'' NPT Thread 42mm Air Compressor Pneumatic Hydraulic Fluid Pressure Gauge Meter Manometer 0-12Bar / 0-180PSI

1/8'' NPT Thread 42mm Air Compressor Pneumatic Hydraulic Fluid Pressure Gauge Meter Manometer 0-12Bar / 0-180PSI

$19.50$19.50

3 sold
20% off
0.5X/0.35X/2X/1X/0.75X Barlow Auxiliary Objective Glass Lens 42mm For 10A 300X 180X 200X C-MOUNT Lens Video Microscope Camera 0.5X/0.35X/2X/1X/0.75X Barlow Auxiliary Objective Glass Lens 42mm For 10A 300X 180X 200X C-MOUNT Lens Video Microscope Camera

0.5X/0.35X/2X/1X/0.75X Barlow Auxiliary Objective Glass Lens 42mm For 10A 300X 180X 200X C-MOUNT Lens Video Microscope Camera

$7.68$9.60

2 sold
72% off
42MM 1MHZ Ultrasonic Beauty Instrument Replacement Head Ultrasound Transmitting Transducer Low Frequency of Strong Sound Waves 42MM 1MHZ Ultrasonic Beauty Instrument Replacement Head Ultrasound Transmitting Transducer Low Frequency of Strong Sound Waves

42MM 1MHZ Ultrasonic Beauty Instrument Replacement Head Ultrasound Transmitting Transducer Low Frequency of Strong Sound Waves

$3.59$12.92

4 sold
50% off
HR12X42G Outdoor Waterproof Telescope Handheld Binoculars for Hunting Camping Large 42mm Objective BAK4 Prism Lens FMC Coating HR12X42G Outdoor Waterproof Telescope Handheld Binoculars for Hunting Camping Large 42mm Objective BAK4 Prism Lens FMC Coating

HR12X42G Outdoor Waterproof Telescope Handheld Binoculars for Hunting Camping Large 42mm Objective BAK4 Prism Lens FMC Coating

$29.99$59.98

4 sold
50% off
1pc 15mm 18mm 20mm 28mm 32mm 41mm 42mm 50mm Flat Glass Lens for LED Light Flashlight Lamp Thickness 1.1/1.6/1.7/1.9mm 1pc 15mm 18mm 20mm 28mm 32mm 41mm 42mm 50mm Flat Glass Lens for LED Light Flashlight Lamp Thickness 1.1/1.6/1.7/1.9mm

1pc 15mm 18mm 20mm 28mm 32mm 41mm 42mm 50mm Flat Glass Lens for LED Light Flashlight Lamp Thickness 1.1/1.6/1.7/1.9mm

$6.18$12.36

2 sold
19% off
Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

$16.85$20.80

2 sold
30% off
Full Size 100 Ohm 5W 5Watt Wire Wound Potentiometer Pot 42mm Body Diameter

Full Size 100 Ohm 5W 5Watt Wire Wound Potentiometer Pot 42mm Body Diameter

$6.99$9.98

2 sold
2PC 36-42mm Binoculars Telescope Big Rubber Eyepiece Shield Eye Lens Cup Guard Cover Hood Cap for SkyRover 2x54 Constellation 2PC 36-42mm Binoculars Telescope Big Rubber Eyepiece Shield Eye Lens Cup Guard Cover Hood Cap for SkyRover 2x54 Constellation

2PC 36-42mm Binoculars Telescope Big Rubber Eyepiece Shield Eye Lens Cup Guard Cover Hood Cap for SkyRover 2x54 Constellation

$6.00$6.00

3 sold
Size Diameter 42mm Round 2mm Thickness 254nm UV Pass Filter Glass ZWB3 For Flashlights Size Diameter 42mm Round 2mm Thickness 254nm UV Pass Filter Glass ZWB3 For Flashlights

Size Diameter 42mm Round 2mm Thickness 254nm UV Pass Filter Glass ZWB3 For Flashlights

$9.50$9.50

2 sold
Drop Shipping 56*42MM Focal Length 100mm 2.4 Drop Shipping 56*42MM Focal Length 100mm 2.4

Drop Shipping 56*42MM Focal Length 100mm 2.4" LCD DIY Projector Rectangular Fresnel Lens

$3.19$3.19

4 sold
50% off
40mm Series 40mm 41mm 42mm 43mm 44mm 46mm Doublet Cemented Achromatic Objective Lenses Refraction Parallel Tube DIY Accessories 40mm Series 40mm 41mm 42mm 43mm 44mm 46mm Doublet Cemented Achromatic Objective Lenses Refraction Parallel Tube DIY Accessories

40mm Series 40mm 41mm 42mm 43mm 44mm 46mm Doublet Cemented Achromatic Objective Lenses Refraction Parallel Tube DIY Accessories

$87.55$175.10

4 sold
2PC 42mm Optical Glass Prism Round Positive Convex Lens K9 DIY Magnifying Magnifier VR Glasses Telescope Binocular Gift for Kids 2PC 42mm Optical Glass Prism Round Positive Convex Lens K9 DIY Magnifying Magnifier VR Glasses Telescope Binocular Gift for Kids

2PC 42mm Optical Glass Prism Round Positive Convex Lens K9 DIY Magnifying Magnifier VR Glasses Telescope Binocular Gift for Kids

$9.99$9.99

4 sold
DC-DC buck power supply module Color screen numerical control WiFi App remote monitoring 50V/8A CC CV Adjustable voltage down DC-DC buck power supply module Color screen numerical control WiFi App remote monitoring 50V/8A CC CV Adjustable voltage down

DC-DC buck power supply module Color screen numerical control WiFi App remote monitoring 50V/8A CC CV Adjustable voltage down

$20.60$20.60

2 sold
20% off
DC 5V 3.1A 4 In 1 Dual USB Car Charger Voltage Current Temperature Meter Tester Digital LED Voltmeter Ammeter Thermometer DC 5V 3.1A 4 In 1 Dual USB Car Charger Voltage Current Temperature Meter Tester Digital LED Voltmeter Ammeter Thermometer

DC 5V 3.1A 4 In 1 Dual USB Car Charger Voltage Current Temperature Meter Tester Digital LED Voltmeter Ammeter Thermometer

$3.18$3.98

2 sold
GWUNW BY56W DC 500.00mV(500mV) 5 bit high precisionVoltage Tester Meter Voltmeter RS232 Serial Communication alarm signal GWUNW BY56W DC 500.00mV(500mV) 5 bit high precisionVoltage Tester Meter Voltmeter RS232 Serial Communication alarm signal

GWUNW BY56W DC 500.00mV(500mV) 5 bit high precisionVoltage Tester Meter Voltmeter RS232 Serial Communication alarm signal

$20.79$20.79

2 sold
50% off
G.T.Power RC Power Analyzer Watt Meter for Voltage (V) Current (A) Power (V) Capacity (Ah) Energy Meter Tester Monitor 150Am G.T.Power RC Power Analyzer Watt Meter for Voltage (V) Current (A) Power (V) Capacity (Ah) Energy Meter Tester Monitor 150Am

G.T.Power RC Power Analyzer Watt Meter for Voltage (V) Current (A) Power (V) Capacity (Ah) Energy Meter Tester Monitor 150Am

$51.17$102.35

2 sold
5X 42mm Necklace Magnifier Hanging Loupe Utility Monocle Lens Coin Magnifying Glass Pendant 450mm Chain Zooming Increase Vision 5X 42mm Necklace Magnifier Hanging Loupe Utility Monocle Lens Coin Magnifying Glass Pendant 450mm Chain Zooming Increase Vision

5X 42mm Necklace Magnifier Hanging Loupe Utility Monocle Lens Coin Magnifying Glass Pendant 450mm Chain Zooming Increase Vision

$1.32$1.32

2 sold
26% off
0.3X 0.35X 0.5X 0.75X 2X Barlow Lens Auxiliary Objective Glass 42mm Thread Interface For C Mount Zoom Lens 120X/180X/200X/500X 0.3X 0.35X 0.5X 0.75X 2X Barlow Lens Auxiliary Objective Glass 42mm Thread Interface For C Mount Zoom Lens 120X/180X/200X/500X

0.3X 0.35X 0.5X 0.75X 2X Barlow Lens Auxiliary Objective Glass 42mm Thread Interface For C Mount Zoom Lens 120X/180X/200X/500X

$9.25$12.64

2 sold
50% off
2 pieces Binoculars Protective Rubber Objective Lens Cap 42mm for Telescope with Outer Diameter 52-54mm K9FA 2 pieces Binoculars Protective Rubber Objective Lens Cap 42mm for Telescope with Outer Diameter 52-54mm K9FA

2 pieces Binoculars Protective Rubber Objective Lens Cap 42mm for Telescope with Outer Diameter 52-54mm K9FA

$4.72$9.45

2 sold
GWUNW BY56W DC 500.00V(500V) 5 bit high precision Voltmeter RS232 Serial Communication alarm signal Voltage Tester Meter GWUNW BY56W DC 500.00V(500V) 5 bit high precision Voltmeter RS232 Serial Communication alarm signal Voltage Tester Meter

GWUNW BY56W DC 500.00V(500V) 5 bit high precision Voltmeter RS232 Serial Communication alarm signal Voltage Tester Meter

$20.56$20.56

3 sold
62% off
Double Convex 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Biconvex Lens Magnifier Focal Length 40 50 150 200 MM Double Convex 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Biconvex Lens Magnifier Focal Length 40 50 150 200 MM

Double Convex 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Biconvex Lens Magnifier Focal Length 40 50 150 200 MM

$17.28$46.35

2 sold
DC 300V 100A 200A 400A Digital Voltmeter Ammeter Battery Capacity Coulometer Power Electric Energy Watt Timer Hall Coulomb Meter DC 300V 100A 200A 400A Digital Voltmeter Ammeter Battery Capacity Coulometer Power Electric Energy Watt Timer Hall Coulomb Meter

DC 300V 100A 200A 400A Digital Voltmeter Ammeter Battery Capacity Coulometer Power Electric Energy Watt Timer Hall Coulomb Meter

$28.58$28.58

3 sold
Green Blue White Biological Microscope Filter Diameter 42mm Transparent Optical Glass Thickness 1.5mm Microscope Accessories Green Blue White Biological Microscope Filter Diameter 42mm Transparent Optical Glass Thickness 1.5mm Microscope Accessories

Green Blue White Biological Microscope Filter Diameter 42mm Transparent Optical Glass Thickness 1.5mm Microscope Accessories

$3.28$3.28

4 sold
20% off
6500K 40 LED Ring Light Aluminum Alloy Adjustable Illuminator Lamp Installation Thread 28mm 42mm For Industrial Video 6500K 40 LED Ring Light Aluminum Alloy Adjustable Illuminator Lamp Installation Thread 28mm 42mm For Industrial Video

6500K 40 LED Ring Light Aluminum Alloy Adjustable Illuminator Lamp Installation Thread 28mm 42mm For Industrial Video

$30.40$38.00

2 sold
52% off
8X Pocket Magnifying Glass Dia 42mm Cylinder Magnifier Industry Electronic Observe Children Gifts 8X Pocket Magnifying Glass Dia 42mm Cylinder Magnifier Industry Electronic Observe Children Gifts

8X Pocket Magnifying Glass Dia 42mm Cylinder Magnifier Industry Electronic Observe Children Gifts

$1.99$4.14

4 sold
37% off
2pcs Diameter 42mm Focal length 75mm Magnifier Convex Lens Lenticular Plano Convex Lens 2pcs Diameter 42mm Focal length 75mm Magnifier Convex Lens Lenticular Plano Convex Lens

2pcs Diameter 42mm Focal length 75mm Magnifier Convex Lens Lenticular Plano Convex Lens

$1.25$1.99

4 sold
40% off
0.5X 2.0X 0.3X Barlow Auxiliary Objective Glass Lens 42mm For 200X 180X 300X C MOUNT Lens Industry Video Microscope Camera 0.5X 2.0X 0.3X Barlow Auxiliary Objective Glass Lens 42mm For 200X 180X 300X C MOUNT Lens Industry Video Microscope Camera

0.5X 2.0X 0.3X Barlow Auxiliary Objective Glass Lens 42mm For 200X 180X 300X C MOUNT Lens Industry Video Microscope Camera

$14.16$23.60

2 sold
18% off
2pcs 40mm 39-42mm Rubber Eyepiece Eye Shield Eye Guards Eye Caps Telescope Binocular Biological Microsocpe Eyepiece Lens Hood 2pcs 40mm 39-42mm Rubber Eyepiece Eye Shield Eye Guards Eye Caps Telescope Binocular Biological Microsocpe Eyepiece Lens Hood

2pcs 40mm 39-42mm Rubber Eyepiece Eye Shield Eye Guards Eye Caps Telescope Binocular Biological Microsocpe Eyepiece Lens Hood

$10.65$12.99

2 sold
Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

$5.95 $5.95

2 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
Vintage Magnifier Pendant Necklace 5X Magnifying Glass Jewelry Hanging Loupe with 42mm Lens 45cm Chain for Ladies Elder Reading Vintage Magnifier Pendant Necklace 5X Magnifying Glass Jewelry Hanging Loupe with 42mm Lens 45cm Chain for Ladies Elder Reading

Vintage Magnifier Pendant Necklace 5X Magnifying Glass Jewelry Hanging Loupe with 42mm Lens 45cm Chain for Ladies Elder Reading

$73.38 $146.76

1 sold

Categories: Tools, Measurement & Analysis Instruments

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18% off
1pc 2.5-42mm Adjustable Zoom Iris Diaphragm Aperture Condenser for Digital Camera Microscope Concentrator with 18pcs Blades 1pc 2.5-42mm Adjustable Zoom Iris Diaphragm Aperture Condenser for Digital Camera Microscope Concentrator with 18pcs Blades

1pc 2.5-42mm Adjustable Zoom Iris Diaphragm Aperture Condenser for Digital Camera Microscope Concentrator with 18pcs Blades

$24.59 $29.99

2 sold

Categories: Tools, Measurement & Analysis Instruments

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31% off
1pc 42mm Optical PMMA Plastic Fresnel Lens Condensing Solar Focus Fresnel Lens Focal Length 24/28/35/40/50/60/70/80mm 1pc 42mm Optical PMMA Plastic Fresnel Lens Condensing Solar Focus Fresnel Lens Focal Length 24/28/35/40/50/60/70/80mm

1pc 42mm Optical PMMA Plastic Fresnel Lens Condensing Solar Focus Fresnel Lens Focal Length 24/28/35/40/50/60/70/80mm

$1.99 $2.88

4 sold

Categories: Tools, Measurement & Analysis Instruments

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10% off
Optical Glass Plano Convex Lens Diameter 42mm Focal Length 40mm K9 Magnifying Glass

Optical Glass Plano Convex Lens Diameter 42mm Focal Length 40mm K9 Magnifying Glass

$3.59 $3.99

4 sold

Categories: Tools, Measurement & Analysis Instruments

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37% off
2PCS PMMA Plano convex lens Dia 42mm Focal length 75mm 4x magnifying glass magnifier lens 2PCS PMMA Plano convex lens Dia 42mm Focal length 75mm 4x magnifying glass magnifier lens

2PCS PMMA Plano convex lens Dia 42mm Focal length 75mm 4x magnifying glass magnifier lens

$1.25 $1.99

4 sold

Categories: Tools, Measurement & Analysis Instruments

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8% off
Proscope M42 x1 Male to M58 x1mm Female 42mm-58mm Male Thread Adapter For Helicoids Proscope M42 x1 Male to M58 x1mm Female 42mm-58mm Male Thread Adapter For Helicoids

Proscope M42 x1 Male to M58 x1mm Female 42mm-58mm Male Thread Adapter For Helicoids

$10.76 $11.70

4 sold

Categories: Tools, Measurement & Analysis Instruments

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0.7x 0.5X 2.0X Barlow Auxiliary Objective Glass Lens for 10A 180X 300X C-MOUNT Lens Industry Video Microscope Camera 42mm 0.7x 0.5X 2.0X Barlow Auxiliary Objective Glass Lens for 10A 180X 300X C-MOUNT Lens Industry Video Microscope Camera 42mm

0.7x 0.5X 2.0X Barlow Auxiliary Objective Glass Lens for 10A 180X 300X C-MOUNT Lens Industry Video Microscope Camera 42mm

$15.98 $15.98

2 sold

Categories: Tools, Measurement & Analysis Instruments

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1/8'' NPT Thread 42mm Air Compressor Pneumatic Hydraulic Fluid Pressure Gauge Meter Manometer 0-12Bar / 0-180PSI 1/8'' NPT Thread 42mm Air Compressor Pneumatic Hydraulic Fluid Pressure Gauge Meter Manometer 0-12Bar / 0-180PSI

1/8'' NPT Thread 42mm Air Compressor Pneumatic Hydraulic Fluid Pressure Gauge Meter Manometer 0-12Bar / 0-180PSI

$19.50 $19.50

3 sold

Categories: Tools, Measurement & Analysis Instruments

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20% off
0.5X/0.35X/2X/1X/0.75X Barlow Auxiliary Objective Glass Lens 42mm For 10A 300X 180X 200X C-MOUNT Lens Video Microscope Camera 0.5X/0.35X/2X/1X/0.75X Barlow Auxiliary Objective Glass Lens 42mm For 10A 300X 180X 200X C-MOUNT Lens Video Microscope Camera

0.5X/0.35X/2X/1X/0.75X Barlow Auxiliary Objective Glass Lens 42mm For 10A 300X 180X 200X C-MOUNT Lens Video Microscope Camera

$7.68 $9.60

2 sold

Categories: Tools, Measurement & Analysis Instruments

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72% off
42MM 1MHZ Ultrasonic Beauty Instrument Replacement Head Ultrasound Transmitting Transducer Low Frequency of Strong Sound Waves 42MM 1MHZ Ultrasonic Beauty Instrument Replacement Head Ultrasound Transmitting Transducer Low Frequency of Strong Sound Waves

42MM 1MHZ Ultrasonic Beauty Instrument Replacement Head Ultrasound Transmitting Transducer Low Frequency of Strong Sound Waves

$3.59 $12.92

4 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
HR12X42G Outdoor Waterproof Telescope Handheld Binoculars for Hunting Camping Large 42mm Objective BAK4 Prism Lens FMC Coating HR12X42G Outdoor Waterproof Telescope Handheld Binoculars for Hunting Camping Large 42mm Objective BAK4 Prism Lens FMC Coating

HR12X42G Outdoor Waterproof Telescope Handheld Binoculars for Hunting Camping Large 42mm Objective BAK4 Prism Lens FMC Coating

$29.99 $59.98

4 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
1pc 15mm 18mm 20mm 28mm 32mm 41mm 42mm 50mm Flat Glass Lens for LED Light Flashlight Lamp Thickness 1.1/1.6/1.7/1.9mm 1pc 15mm 18mm 20mm 28mm 32mm 41mm 42mm 50mm Flat Glass Lens for LED Light Flashlight Lamp Thickness 1.1/1.6/1.7/1.9mm

1pc 15mm 18mm 20mm 28mm 32mm 41mm 42mm 50mm Flat Glass Lens for LED Light Flashlight Lamp Thickness 1.1/1.6/1.7/1.9mm

$6.18 $12.36

2 sold

Categories: Tools, Measurement & Analysis Instruments

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19% off
Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

Elliptical Secondary Mirror 20mm 25mm 30mm 35mm 40mm 42mm 50mm 54mm for DIY Newtonian Reflecting Astronomical Telescope

$16.85 $20.80

2 sold

Categories: Tools, Measurement & Analysis Instruments

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30% off
Full Size 100 Ohm 5W 5Watt Wire Wound Potentiometer Pot 42mm Body Diameter

Full Size 100 Ohm 5W 5Watt Wire Wound Potentiometer Pot 42mm Body Diameter

$6.99 $9.98

2 sold

Categories: Tools, Measurement & Analysis Instruments

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2PC 36-42mm Binoculars Telescope Big Rubber Eyepiece Shield Eye Lens Cup Guard Cover Hood Cap for SkyRover 2x54 Constellation 2PC 36-42mm Binoculars Telescope Big Rubber Eyepiece Shield Eye Lens Cup Guard Cover Hood Cap for SkyRover 2x54 Constellation

2PC 36-42mm Binoculars Telescope Big Rubber Eyepiece Shield Eye Lens Cup Guard Cover Hood Cap for SkyRover 2x54 Constellation

$6.00 $6.00

3 sold

Categories: Tools, Measurement & Analysis Instruments

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Size Diameter 42mm Round 2mm Thickness 254nm UV Pass Filter Glass ZWB3 For Flashlights Size Diameter 42mm Round 2mm Thickness 254nm UV Pass Filter Glass ZWB3 For Flashlights

Size Diameter 42mm Round 2mm Thickness 254nm UV Pass Filter Glass ZWB3 For Flashlights

$9.50 $9.50

2 sold

Categories: Tools, Measurement & Analysis Instruments

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Drop Shipping 56*42MM Focal Length 100mm 2.4 Drop Shipping 56*42MM Focal Length 100mm 2.4

Drop Shipping 56*42MM Focal Length 100mm 2.4" LCD DIY Projector Rectangular Fresnel Lens

$3.19 $3.19

4 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
40mm Series 40mm 41mm 42mm 43mm 44mm 46mm Doublet Cemented Achromatic Objective Lenses Refraction Parallel Tube DIY Accessories 40mm Series 40mm 41mm 42mm 43mm 44mm 46mm Doublet Cemented Achromatic Objective Lenses Refraction Parallel Tube DIY Accessories

40mm Series 40mm 41mm 42mm 43mm 44mm 46mm Doublet Cemented Achromatic Objective Lenses Refraction Parallel Tube DIY Accessories

$87.55 $175.10

4 sold

Categories: Tools, Measurement & Analysis Instruments

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2PC 42mm Optical Glass Prism Round Positive Convex Lens K9 DIY Magnifying Magnifier VR Glasses Telescope Binocular Gift for Kids 2PC 42mm Optical Glass Prism Round Positive Convex Lens K9 DIY Magnifying Magnifier VR Glasses Telescope Binocular Gift for Kids

2PC 42mm Optical Glass Prism Round Positive Convex Lens K9 DIY Magnifying Magnifier VR Glasses Telescope Binocular Gift for Kids

$9.99 $9.99

4 sold

Categories: Tools, Measurement & Analysis Instruments

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DC-DC buck power supply module Color screen numerical control WiFi App remote monitoring 50V/8A CC CV Adjustable voltage down DC-DC buck power supply module Color screen numerical control WiFi App remote monitoring 50V/8A CC CV Adjustable voltage down

DC-DC buck power supply module Color screen numerical control WiFi App remote monitoring 50V/8A CC CV Adjustable voltage down

$20.60 $20.60

2 sold

Categories: Tools, Measurement & Analysis Instruments

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20% off
DC 5V 3.1A 4 In 1 Dual USB Car Charger Voltage Current Temperature Meter Tester Digital LED Voltmeter Ammeter Thermometer DC 5V 3.1A 4 In 1 Dual USB Car Charger Voltage Current Temperature Meter Tester Digital LED Voltmeter Ammeter Thermometer

DC 5V 3.1A 4 In 1 Dual USB Car Charger Voltage Current Temperature Meter Tester Digital LED Voltmeter Ammeter Thermometer

$3.18 $3.98

2 sold

Categories: Tools, Measurement & Analysis Instruments

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GWUNW BY56W DC 500.00mV(500mV) 5 bit high precisionVoltage Tester Meter Voltmeter RS232 Serial Communication alarm signal GWUNW BY56W DC 500.00mV(500mV) 5 bit high precisionVoltage Tester Meter Voltmeter RS232 Serial Communication alarm signal

GWUNW BY56W DC 500.00mV(500mV) 5 bit high precisionVoltage Tester Meter Voltmeter RS232 Serial Communication alarm signal

$20.79 $20.79

2 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
G.T.Power RC Power Analyzer Watt Meter for Voltage (V) Current (A) Power (V) Capacity (Ah) Energy Meter Tester Monitor 150Am G.T.Power RC Power Analyzer Watt Meter for Voltage (V) Current (A) Power (V) Capacity (Ah) Energy Meter Tester Monitor 150Am

G.T.Power RC Power Analyzer Watt Meter for Voltage (V) Current (A) Power (V) Capacity (Ah) Energy Meter Tester Monitor 150Am

$51.17 $102.35

2 sold

Categories: Tools, Measurement & Analysis Instruments

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5X 42mm Necklace Magnifier Hanging Loupe Utility Monocle Lens Coin Magnifying Glass Pendant 450mm Chain Zooming Increase Vision 5X 42mm Necklace Magnifier Hanging Loupe Utility Monocle Lens Coin Magnifying Glass Pendant 450mm Chain Zooming Increase Vision

5X 42mm Necklace Magnifier Hanging Loupe Utility Monocle Lens Coin Magnifying Glass Pendant 450mm Chain Zooming Increase Vision

$1.32 $1.32

2 sold

Categories: Tools, Measurement & Analysis Instruments

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26% off
0.3X 0.35X 0.5X 0.75X 2X Barlow Lens Auxiliary Objective Glass 42mm Thread Interface For C Mount Zoom Lens 120X/180X/200X/500X 0.3X 0.35X 0.5X 0.75X 2X Barlow Lens Auxiliary Objective Glass 42mm Thread Interface For C Mount Zoom Lens 120X/180X/200X/500X

0.3X 0.35X 0.5X 0.75X 2X Barlow Lens Auxiliary Objective Glass 42mm Thread Interface For C Mount Zoom Lens 120X/180X/200X/500X

$9.25 $12.64

2 sold

Categories: Tools, Measurement & Analysis Instruments

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50% off
2 pieces Binoculars Protective Rubber Objective Lens Cap 42mm for Telescope with Outer Diameter 52-54mm K9FA 2 pieces Binoculars Protective Rubber Objective Lens Cap 42mm for Telescope with Outer Diameter 52-54mm K9FA

2 pieces Binoculars Protective Rubber Objective Lens Cap 42mm for Telescope with Outer Diameter 52-54mm K9FA

$4.72 $9.45

2 sold

Categories: Tools, Measurement & Analysis Instruments

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GWUNW BY56W DC 500.00V(500V) 5 bit high precision Voltmeter RS232 Serial Communication alarm signal Voltage Tester Meter GWUNW BY56W DC 500.00V(500V) 5 bit high precision Voltmeter RS232 Serial Communication alarm signal Voltage Tester Meter

GWUNW BY56W DC 500.00V(500V) 5 bit high precision Voltmeter RS232 Serial Communication alarm signal Voltage Tester Meter

$20.56 $20.56

3 sold

Categories: Tools, Measurement & Analysis Instruments

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62% off
Double Convex 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Biconvex Lens Magnifier Focal Length 40 50 150 200 MM Double Convex 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Biconvex Lens Magnifier Focal Length 40 50 150 200 MM

Double Convex 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Biconvex Lens Magnifier Focal Length 40 50 150 200 MM

$17.28 $46.35

2 sold

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