GAIN EXPRESS best sellers

#1 Digital Hardness Meter GAIN EXPRESS Digital Hardness Meter Durometer Hardness Tester - Portable and Versatile for Measuring 0-100HD Shore A/C/D Hardness of Rubber, Tires, Plastics, Thermal Plastics, Flooring, and Bowling Balls

£35.90 on Amazon

#2 Manometer Professional GAIN EXPRESS Manometer, Professional Air Pressure Meter, Digital Manometer Gas Pressure Gauge Tester, 11 Units with Backlight, Suitable for Differential Pressure of 1-2 Pipes Air Condition System Measurement

£36.90 on Amazon

#3 Decibel Meter Data Logger GAIN EXPRESS Decibel Meter Data Logger Digital Sound Level Meter with 43,000 Data Record & Export, SPL Noise Meter, A/C Frequency Weighting, Real-Time Measure, 3 Color Alarm, Rechargeable & Data Logging Function

£45.90 on Amazon

#4 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

£31.90 on Amazon

#5 🔥 Durometer Tester Shore Gain Express Durometer Tester Shore A Hardness Tester, Rubber Tire Durometer Gauge 0~100HA Digital Hardness Meter with Large LCD Display

£31.90 on Amazon

#6 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

£19.99 on Amazon

#7 Decibel Meter Sound Level GAIN EXPRESS Decibel Meter Sound Level Tester Datalogger with Visual Alarm, 43,000 Data Record SPL Monitor Noise Reader Colored Screen Display PC Connection for Home, Factory, Classroom etc

£45.90 on Amazon

#8 🔥 CO2 Carbon Dioxide Detector GAIN EXPRESS CO2 Carbon Dioxide Detector Indoor Air Quality Monitor Temperature, Humidity Meter, Portable Tabletop or Wall Mountable CO2 Meter with Adjustable CO2 Alarm Threshold

£23.90 on Amazon

#9 🔥 Fish Finder Wireless GAIN EXPRESS Fish Finder Wireless Sonar Sensor 125kHz Frequency 45 Meters / 147 Feet Depth Alarm Function and Large LCD Display

£69.69 on Amazon

#10 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

£89.90 on Amazon

#11 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 Gauge 3~19999RPM Speed Meter with Data Hold, Max/Min/AVG

£29.90 on Amazon

#12 Non Contact Tachometer GAIN EXPRESS Non Contact Tachometer, 2.5-99999 RPM ±0.02%+1Digtal Accuracy Laser Digital Tachometer, Speed RPM Meter Gauge with Backlight, Data Hold, and Max/Min/AVG Function

£21.90 on Amazon

#13 CO2 Meter Handheld CO2 GAIN EXPRESS CO2 Meter Handheld CO2 Monitor 9999ppm Measuring Range Carbon Dioxide Detector NDIR Sensor Air Quality Temperature Humidity Meter

£134.90 on Amazon

#14 Non Contact Digital Tachometer GAIN EXPRESS Non-Contact Digital Tachometer RPM Meter Speed Gauge Laser Photo Tachometer with 2.5~99999 RPM Range, Backlit Display | Analog Bar Scale | Custom Alarms for HVAC Motor Engine Speed Tester

£21.90 on Amazon

#15 🔥 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

#16 🔥 Handheld Heavy Duty Calcite GAIN EXPRESS Handheld Heavy Duty Calcite Dichroscope, Trichoic Gem & Gemstones Gemological Testing, Jeweler Tool Metal Body Gemology 15mm Diameter Gemologist

£31.90 on Amazon

#17 🔥 CO2 Meter Handheld CO2 GAIN EXPRESS CO2 Meter Handheld CO2 Monitor 9999ppm Measuring Range Carbon Dioxide Detector NDIR Sensor Air Quality Temperature Humidity Meter

£129.11 on Amazon

#18 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

£38.90 on Amazon

#19 3 in 1 Honey Refractometer GAIN EXPRESS 3-in-1 Honey Refractometer Brix/Moisture/Baume Tester Meter ATC, Tri-Scale 58-90%/12-27%/38-43Be', Sugar Water Content Level Beekeeping Maple Syrup, Test Kit w/Calibration Oil & Block

£22.90 on Amazon

#20 🔥 PH & Temperature 2 in 1 GAIN EXPRESS PH & Temperature 2-in-1 Continuous Monitor Meter w/Backlight Replaceable Electrode, Dual Display 0.00~14.00pH °C/ °F Water Quality Monitoring Kit, for Aquariums Hydroponics Pools Tanks Spa

£37.90 on Amazon