GAIN EXPRESS best sellers

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

$39.90 on Amazon

#2 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

#3 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

#4 🔥 Body Fat Caliper Skinfold GAIN EXPRESS Body Fat Caliper Skinfold Caliper Professional Skin Thickness Fat Measure Body Fat Tester, Body Fat Monitors for Health Monitoring Handheld BMI Body Fat Measurement Device

$12.59 on Amazon

#5 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

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

$30.90 on Amazon

#7 Pocket Diffraction Grating Gain Express Pocket Diffraction Grating Gemological Spectroscope for Quick Gemstone Identification and GIA Use

$33.99 on Amazon

#8 Clinical Refractometer GAIN EXPRESS Clinical Refractometer with ATC, Tri Scale Serum Protein/Urine Specific Gravity/Refractive Index

$22.90 on Amazon

#9 🔥 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

#10 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

#11 🔥 Digital Car Window Tint GAIN EXPRESS Digital Car Window Tint Meter Portable Solar Tester Meter Visual Light Transmission Tester Filmed Glass Tester UV IR Rejection Meter Spectrum Tester

$135.09 on Amazon

#12 Wearable 2 in 1 WBGT GAIN EXPRESS Wearable 2-in-1 WBGT + HI Heat Index Checker Wet Bulb Globe Temperature Heat Stress Meter Air Globe Temperature Humidity Tester with Dangerous Level Indicator Audible Alarm

$45.99 on Amazon

#13 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

#14 High Accuracy pH Electrode GAIN EXPRESS High Accuracy pH Electrode with Calibration Powder, 0-14 pH Probe with BNC Connector & 300cm Cable for Wide Application

$19.99 on Amazon

#15 K/J Type Thermocouple GAIN EXPRESS K/J Type Thermocouple Dual Channel Thermometer, T1-T2 Channel Temperature Measurement Wide Range Digital Thermometer with Backlight and Thermocouple Temperature Compensation

$28.99 on Amazon

#16 Replacement pH Electrode GAIN EXPRESS Replacement pH Electrode with Calibration Powder, 0-14 pH Highly Accurate Probe with BNC Connector & 200cm Cable for Continuous Liquid Measurement

$19.90 on Amazon

#17 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

#18 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

#19 Automotive Fuel Injector GAIN EXPRESS Automotive Fuel Injector Tester, 12V 4 Pulse Modes, Handheld Car Vehicle Fuel Pressure System Diagnostic Scan Testing Tool Gauge, Individual Test Stuck/Leaking/Burnt-out Problem

$27.99 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