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Combo Diamond Moissanite Tester Gemstone 2pt Jewelry Tool Jewel Stone Gem Test
$119.90
6-IN-1 Water Quality Tester pH/EC/TDS/Salinity/SG/Temp 24Hrs Online Monitoring
$60.90
Light Intensity Meter PPFD PAR Tester for Outdoor Indoor Plants Led Grow Lights
$86.90
Digital Manometer Air Vacuum Gas Differential Pressure Gauge Meter Tester
$36.90
10x Triplet Jewelers Eye Loupe Pocket Coin Gems Magnifier Loop with LED UV light
$19.19
PH & Temperature Monitor Meter 2 IN 1 Dual Display Mini Water Quality Tester kit
$33.89
Professional Multi-Field EMF Detector Meter Electromagnetic Radiation 3-in-1
$159.90
Jewelers Loupe 10X Magnifying Glass with Light Jewelry Eye Loop w/ Reticle Scale
$29.99 to $66.99
Digital Manometer Portable Air Vacuum Gas Pressure Gauge Meter 11 Units 2 Pipes
$31.99
Wireless Weather Station with 3 Sensors Touch Sreen Humidity Temperature RCC DCF
$34.90
Replacement Remote Sensor for Wireless Weather Station Temperature Humidity
$23.90
30x Magnification Jewelry Gem Loupe with UV & 6 LED Light, 21mm Optical Glass
$23.90
Pocket Diffraction Jewelry Gemological Spectroscope for Gemstone Identification
$45.90
Diamond Tester UV Ultraviolet Light Gemstone Tool Selector + Pouch JEM-II
$59.90
Wireless Weather Station Temperature Humidity RCC DCF w/ 3 Remote Sensors
$34.90
Handheld Heavy Duty Calcite Dichroscope, Trichoic Gem & Gemstones 15mm Diameter
$47.90
Diamond & MoissaniteTester 2pt Gemstone Selector Jewelry Diamond Testing Tool
$119.90
Decibel Meter Large Colored LED Screen Display Sound Level Tester 30dB to 130dB
$66.90
6X420mm Dental Binocular Loupes Medical Surgical Loupes Dentist Magnifier US
$209.90
Gem Refractometer Gemological Gemstone Built-in LED Light + RI Oil+ 0.01nD Scale
$98.90
Light Meter Portable PAR Meter Quantum For Grow Light Recording LUX Meter Gauge
$139.99
Ruby Filter Gem Emerald Identification Gemstone Red Pink Tester Tool Identifier
$32.90
Teslameter Magnetometer AC / DC Gaussmeter Magnetic Field Strength Meter 3000mT
$257.90
10X Scale Loupe Jeweller Optical Magnifying Glass 5 LED 5 UV Light Jewelry Tool
$34.90
10X25mm Optical Glass Magnifier LED Lighted Jewelers loupe with Measure Scale
$29.90
Universal Battery Tester Analyzer C D N AA AAA 9V 1.5V Button Cell Batteries
$9.90
Mini Folding Illuminated Loupe Jewelry Eye Magnifier w/ LED Light for Gems Coin
$19.19
Digital Battery Tester Volt Checker Load Analyzer Batteries Universal Tester
$20.90
Bench Type Polariscope Built-in w/ LED, Rotatable Platform 2 poalorized Filters
$130.90
Wireless Fish Finder 45m (135ft) Depth & 120m (400ft) for Fresh & Salt Water
$94.90
Window Tint Meter Visual Light Transmission 18mm Thickness Continuous Measuring
$139.90
K-Type Thermocoupe 4 Channel -200~1370°C /-328~2498°F SD Card Logger Thermometer
$164.90
Illuminated 10X25mm Jewelers Loupe Magnifier With Measure Scale 8 LED Lights
$28.90
Battery Tester Checker Seven Type of Batteries C AA AAA D N 9V (6F22) and 1.55V
$9.90
3-in-1 Automotive Battery Fluid Antifreeze Refractometer Coolant Freezing Point
$29.90
Digital Manometer Air Gas Pressure Meter Differential Dual Port HVAC Tester
$68.90
2-in-1 WBGT + HI Heat Index Checker Wet Bulb Globe Temperature Heat Stress Meter
$38.99
Digital Humidity & Temperature Meter Hygrometer and Wet-Bulb -4~158°F Range
$34.90
Swimming Pool pH Meter Chlorine Tester Analog Water Analysis Test Kit
$28.99
Handheld Durable Small Diffraction Spectroscope Gemstone Gem Gemological 55mm
$44.90
Chelsea Filter for Gem Identification Emerald Green, Blue and Red Gemstones
$31.90
Professional Sound Level Meter Noise Decible Tester 30dB~130dB High Accuracy
$35.88
Desktop Polariscope Built-in LED Light Source Gemstone Glass Filter 110V or 220V
$130.90
30x Jeweler Magnification Loupe 20.5mm Gem Magnifier Triplet Lens Optical Tool
$27.90
Portable Handheld Polariscope Gems Gemstone Gemologist Tool with LED Flashlight
$41.90
Moissanite Tester with UV Ultraviolet Light 2pt Jewelry Gem Loose Stone Selector
$58.90
Handheld Brix Refractometer 0-10% ATC Low-Concentrated Sugar Content Solutions
$29.90
Reflectance Meter 0~100 Cryptometer Light Reflectivity Transparency Tester
$287.90
About us
Gain Express Holdings Ltd - We are a professional supplier of all kinds of testing instruments based in Hong Kong. We supply a wide range of products w/ CE approval and our factory is certified by EN ISO9001-2000. You can easily find our company's background via search engines. ie. Google or Yahoo
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h***h (69)- Feedback left by buyer.
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Great Seller!, fast shipping,product as described, would buy again.
-***r (154)- Feedback left by buyer.
Past 6 months
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great shipping/ packaged great / very professional / great seller / *****
l***l (253)- Feedback left by buyer.
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Fast delivered and units are as specified . Thank you.
e***c (2481)- Feedback left by buyer.
Past 6 months
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As described. Fast shipping.
o***2 (1092)- Feedback left by buyer.
Past 6 months
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Exactly what I ordered, delivered on time.
o***d (1512)- Feedback left by buyer.
Past 6 months
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Item received as described. Fast Shipping.