GAIN EXPRESS best sellers

#1 10 x 21mm Mini Folding GAIN EXPRESS 10 x 21mm Mini Folding Illuminated Loupe Jewelry Magnifier Pocket with LED Light, for Gems Jewelry Jewelers Eye Rocks Stamps Coins Watches Hobbies Antiques Gems

$19.99 on Amazon

#2 Compact Pocket Size Digital Gain Express Compact Pocket Size Digital Shore A Hardness Meter Tester 1-100ha Durometer LCD Display

$30.90 on Amazon

#3 Quantum PAR Meter for GAIN EXPRESS Quantum PAR Meter for LED Grow Light Full Spectrum PPFD Meter High Precision Quantum Sensor, Light Meter for Plants, Greenhouse and Farming Lux Meter Tester 400-700nm

$85.09 on Amazon

#4 CO2 Meter Air Quality GAIN EXPRESS CO2 Meter Air Quality Monitor Handheld CO2 Monitor 0~9999ppm Measurement Carbon Dioxide Temperature Humidity Detector NDIR Sensor Indoor Outdoor Air Quality Tester

$134.90 on Amazon

#5 Sound Level Calibrator GAIN EXPRESS Sound Level Calibrator Decibel Meter Sound Level Reader Sonometro Decibel Meter Calibrator 94db & 114db Output Levels For 1 Inch And 1/2 Inch Mic

$112.90 on Amazon

#6 Digital Sound Level Meter GAIN EXPRESS Digital Sound Level Meter Calibrator 94dB & 114dB for 1/2" and 1" inch Microphone, Professional Noise Decibel Calibration Tool Measurement Accuracy Check

$108.90 on Amazon

#7 Professional Sound Level GAIN EXPRESS Professional Sound Level Calibrator Decibel Meter Calibrator with Three Calibration Level at 94dB & 104dB & 114dB

$79.79 on Amazon

#8 Shore D Hardness Tester GAIN EXPRESS Shore D Hardness Tester Meter Portable 0-100HD Digital Durometer D for Rubber, Tire, Plastic, Thermal Plastic, Flooring, Bowling Ball with Large LCD Display

$30.90 on Amazon

#9 🔥 Professional Sound Level GAIN EXPRESS Professional Sound Level Meter with Backlight Display High Accuracy Measuring 30dB-130dB

$39.90 on Amazon

#10 Thermocouple Thermometer GAIN EXPRESS Thermocouple Thermometer Digital K Type Thermometer HVAC Thermometer Dual Temperature Meter with 4 Thermocouples, MAX/MIN/AVG Temperature Measurement, -50~1300°C (-58~2372°F)

$29.99 on Amazon

#11 USB Temperature Data GAIN EXPRESS USB Temperature Data Logger Recorder for Temperature Humidity and Atmospheric Pressure, IP65 Waterproof Temperature Logger with PDF and CSV Reports High Accuracy

$69.99 on Amazon

#12 CO2 Controller Carbon GAIN EXPRESS CO2 Controller Carbon Dioxide Controller CO2 Meter Monitor with Relay Function 4.5m Cable NDIR Carbon Dioxide Sensor Probe for Grow Room, Plant, Grow Tent, Greenhouse, Garden, Indoor

$157 on Amazon

#13 10X Illuminated Jewelers GAIN EXPRESS 10X Illuminated Jewelers Loupe Magnifier with Interchangeable Reticle Scale, LED Light, 25mm Field of View, for Jewelry,Gems, Coins, Hobby Tool (1 Glass Scale Chart)

$29.90 on Amazon

#14 AC/DC Gaussmeter Magnetic GAIN EXPRESS AC/DC Gaussmeter Magnetic Field Strength Meter Teslameter Magnetometer Residual Permanent Magnet N/S Polarity 3000mT (30000 Gauss) Automatic Manual Data Recording

$259.90 on Amazon

#15 🔥 Automotive Electrical GAIN EXPRESS Automotive Electrical Open&Short Finder Circuit Tester Circuit Finder Detector Tone Generator Cable Wire Breaker Tracker Circuit Fault Finder DC 6-42V Car Diagnostic Tool

$27.99 on Amazon

#16 Digital 4 Channel Thermocouple GAIN EXPRESS Digital 4 Channel Thermocouple Thermometer Temperature Recorder Data Logger AZ Instruments Multi Channel K Type Thermometer Thermocouple Reader with 8G SD Card 2 Bead Type K-Thermocouple Probe

$134.90 on Amazon

#17 Accurate Digital Handheld GAIN EXPRESS Accurate Digital Handheld Stroboscope with Wide Measurement Range, 50~12,000 FPM, for Equipment Fault Detection and Maintenance

$119.90 on Amazon

#18 Soil PH Meter Soil Moisture GAIN EXPRESS Soil PH Meter, Soil Moisture Sensor Meter, Soil PH Tester Gardening Tool Kits for Plant, Tree, Soil Tester for Moisture Great for Garden, Lawn, Farm, Indoor & Outdoor Use 295mm Long

$56.99 on Amazon

#19 Decibel Meter Sound Level GAIN EXPRESS Decibel Meter Sound Level Meter, High Accuracy db Meter Classroom Noise Meter with A/C/Z Weighted, spl Meter with Logging 30-130dB Audio Noise Measure Device with Data Hold Backlight

$59 on Amazon

#20 Decibel Meter Digital GAIN EXPRESS Decibel Meter Digital Sound Level Meter Professional Noise Meter High Accuracy 30dB to130dB Measuring Range with Backlight Display for Classroom, Office, Home, etc.

$29.90 on Amazon