gain express best sellers

#1 🔥 Jewelers Loupe Magnifier Gain Express Jewelers Loupe Magnifier, Jewelry Loop Magnifier with Light, Hastings Triplet Loupe 10X for Coin, Gem, Stamp, Diamond etc (White LED & UV Light)

$19.90 on Amazon

#2 Durometer Tester Shore GAIN EXPRESS Durometer Tester Shore A Hardness Tester, Rubber Tire Durometer Gauge 0~100HA Digital Hardness Meter with Large LCD Display

$29.90 on Amazon

#3 2 in 1 Digital Tachometer GAIN EXPRESS 2-in-1 Digital Tachometer, Non Contact RPM Meter Laser Photo Tachometer 3~100,000 RPM, Contact RPM Tachometer 3~19999RPM Speed Meter with Data Hold, Max/Min/AVG

$29.90 on Amazon

#4 🔥 Professional Sound Level GAIN EXPRESS Professional Sound Level Calibrator Decibel Meter Calibration with Three Calibration Level at 94dB & 104dB & 114dB, SPL Meter Calibrator for dB Noise meter

$79.79 on Amazon

#5 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

$69.90 on Amazon

#6 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

$29.90 on Amazon

#7 🔥 Decibel Meter Data Logger GAIN EXPRESS Decibel Meter Data Logger, Digital Sound Level Meter with Recording, dB Meter 30~130dB, 31,000 Data, 3Color Light Alarm, USB Rechargeable SPL Meter for Home, Classroom, Office, Neighbor, Industrial

$35.90 on Amazon

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

$27.90 on Amazon

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

$22.90 on Amazon

#10 🔥 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

#11 🔥 Dissolved Oxygen Meter GAIN EXPRESS Dissolved Oxygen Meter, Dissolved Oxygen Tester with 11.48 ft Cable, DO meter with ATC/Temp/Manually Salt/99 Memory/Data Hold, Dissolved Oxygen Test Kit for Aquarium, Fish Tank(With IRDA Port)

$175.90 on Amazon

#12 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

$79.90 on Amazon

#13 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

$109.90 on Amazon

#14 Jewelry Loupe LED Scale GAIN EXPRESS Jewelry Loupe, LED Scale Loupe 10x Magnifier with 8 LED Light & Adjustable Focal Length, Jewelers Loop Magnifying Glass for Jewelry Gems, Coins, Hobby, Diamond (Interchangeable Scale)

$29.90 on Amazon

#15 🔥 Diffraction Spectroscope GAIN EXPRESS Diffraction Spectroscope, Pocket Grating Gemological Spectrometer for Quick Gemstone Identification and GIA Use

$33.99 on Amazon

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

$115.90 on Amazon

#17 Digital Combo pH & Temperature GAIN EXPRESS Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory

$36.90 on Amazon

#18 🔥 Illuminated Jewelers GAIN EXPRESS Illuminated Jewelers Loupe Magnifier 10x, Rechargeable Jewelers Loupe Foldable Jewelry Magnifier LED Loupe Triplet with 6 LEDs & UV Light for Gems, Jewelry, Coins, Stamps, etc

$19.90 on Amazon

#19 Foldable Ruby Filter GAIN EXPRESS Foldable Ruby Filter Identification Tool for Emerald and Gemstones

$20.99 on Amazon

#20 🔥 18 Egg Incubator with GAIN EXPRESS 18 Egg Incubator with Automatic Egg Turning, Egg Candler, Automatic Water Bottle Refill, Eggs Incubators for Hatching Eggs Chickens Duck Quail Bird, Temp and Humidity Display

$35.90 on Amazon