Best Selling

GM21 Mini Jeweler Loupe 20X Magnifier + LED & UV light 21mm lens

NDL-060N 6.0x Magnification Dental Loupes, Prismatic Keplerian Style Nickel Alloy Frame, Dental Surgical Medical Binocular, 45mm Field of View+ 25mm Depth of Field Loupe+ 420mm Working Distance, Flip-Up Flexible Optical Glass Loupe Dentistry

GM31 Mini 30X Jeweler Loupe Magnifier + LED & UV light 21mm lens

EMF-280 Digital EMF Tester Electric and Magnetic Field Radiation Detector Temperature Measure with Color-screen Display and Rechargeable Battery Handheld Tool

GEM-246 10x 21mm Loupe Jeweler Magnifier LED UV Light Triplet Lens Magnifying Gem Optical Tool Achromatic Aplanatic Foldaway Pocket Black Frame for Inspecting Diamonds Gemstones Watches Print

WQM-242 5-in-1 Water Quality Multi-parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall-mountable Rechargeable Continuous Monitor Tester, Aquariums Hydroponics Pool Fish Tank Pond Drinking

TM-8812 Ultrasonic Digital 1.00-200.00mm Thickness Meter Metal / Non-Metal

T92 3-Axis Gauss EMF ELF Meter Detector, Electromagnetic Field Radiation Intensity 20/ 200/ 2000 mG & uT, Frequency 30~2000 Hz, Handheld Portable Gauge for Microwave Computer Monitor Power Line

869-0 Professional pH Temperature Meter Tester °C /°F ±0.05pH High Accuracy Portable Water Quality Device

SOL-ORP-256MV ORP Oxidation-Reduction Potential REDOX 256mV Calibration Solution 50ml

DT-2350PA Handheld Stroboscope with 50~12,000 FPM Rotational Speed Measure Digital LCD Display

AG-02LB Digital 360° Spirit Level Angle Gauge Inclinometer w/ Magnets Box Type +/-180 degree Accuracy 0.1 degree Bevel Box Level Angle Finder Large LCD Display

GEM-249 30x Magnification Jewelry Gem Loupe with UV & 6 LED Light, 21mm Optical Glass Triplet Magnifiers Lens Portable Handheld Magnifying Tool Jeweller Stamp & Coin Collectors Foldaway And Black Frame Design Metal Body

REW-25BATC Grape Fruit Wine Alcohol Refractometer with ATC, Dual Scale 0-25% VOL 0-40% Brix, Handheld Optical Meter Tester for Sugar Glucose Wine Making Winemakers Homebrew Test Tool

REA-503abATC 6-in-1 Automotive Car Refractometer ATC for Adblue/ Antifreeze/ Battery Acid/ Windshield Fluid, Propylene Ethylene Glycol Cleaning Coolant Charge Specific Gravity Density Condition

CLMG-7208 Handheld Heavy Duty Calcite Dichroscope, Trichoic Gem & Gemstones Gemological Testing, Jeweler Tool Metal Body Gemology 15mm Diameter Gemologist

CL-400 Handheld 400x Fiber Optical Microscope Inspection White LED Illumination CE Approved

MAN-45 Professional Digital Manometer, Portable Handheld Air Vacuum/ Gas Pressure Gauge Meter 11 Units with Backlight, ±13.78kPa ±2PSI, Suitable for Differential Pressure of 1-2 Pipes, Ventilation, Air Condition System Measurement

T95 Digital 3-AXIS EMF RF Radiation ElectroSmog Power Meter Tester

GS-PS1 Desktop Standing Polariscope Built-in LED Rotatable Platform 2 Glass Filter