GAIN EXPRESS best sellers

#1 🔥 Portable 0 100HD Shore GAIN EXPRESS Portable 0-100HD Shore D Hardness Tester Meter Digital Durometer Scale for Rubber, Tire, Plastic, Thermal Plastic, Flooring, Bowling ball with large LCD Display

£31.90 on Amazon

#2 🔥 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

#3 🔥 Digital Tachometer Non GAIN EXPRESS Digital Tachometer Non Contact RPM Meter Laser Photo Tachometer 3~100,000rpm, Contact RPM Tachometer Gauge Speed Meter with Data Hold, Max/Min/Ave Mode

£31.90 on Amazon

#4 🔥 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

#5 🆕 Bluetooth Decibel Meter GAIN EXPRESS Bluetooth Decibel Meter Digital Sound Level Meter Portable SPL Meter 30~130dBA Range MAX/MIN Data Hold with LCD Display Backlight for Home, School and Workplace to Accurate Sound Measurement

£29.90 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

£21.90 on Amazon

#7 Pen Type Salinity & Temperature GAIN EXPRESS Pen Type Salinity & Temperature Meter ATC NaCl Salt Water Quality Tester for Saltwater Aquarium Hydroponics Food (Salinity Meter (70.0ppt) (Salinity/TDS/Temp Meter)

£35.90 on Amazon

#8 Digital K/J/T/E/R/S/N GAIN EXPRESS Digital K/J/T/E/R/S/N Type Thermocouple Thermometer Dual-channel LCD Display -150~1767°C ATC Temperature Meter Tester, Celsius and Fahrenheit Accurate to ±0.1%+0.6℃, With Backlight

£25.90 on Amazon

#9 🆕 Decibel Meter Sound Level GAIN EXPRESS Decibel Meter Sound Level Meter Professional Sound Level Reader Detector 30dB to 130dB MAX Data Hold, Noise Monitor Digital SPL dB Meter with Alarm, Data Record & Rechargeable Function

£40.90 on Amazon

#10 🔥 🆕 Decibel Meter Sound GAIN EXPRESS Decibel Meter, Sound Level Meter 30-130dB Digital Audio Noise Measure Device with MAX/MIN, LCD Backlight Display Sound Detector for for Home, Office, School

£22.90 on Amazon

#11 Professional Digital GAIN EXPRESS 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,etc

£37.90 on Amazon

#12 ORP Redox Meter Tester GAIN EXPRESS ORP Redox Meter Tester -1999~1999mV, 1-point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa

£26.90 on Amazon

#13 5 in 1 Water Quality GAIN EXPRESS 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

£79.90 on Amazon

#14 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

£40.90 on Amazon

#15 Pensize ORP Tester 1200~1200mV GAIN EXPRESS Pensize ORP Tester -1200~1200mV with ORP Calibration Buffer Powder for Water Quality Measurement ±2mV High Accuracy Oxidation Reduction Potential Meter

£38.90 on Amazon

#16 ORP Oxidation Reduction GAIN EXPRESS ORP Oxidation-Reduction Potential REDOX 256mV Calibration Solution 30ml

£21.90 on Amazon

#17 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

£29.90 on Amazon

#18 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

#19 Hydrogen Sulfide Detector GAIN EXPRESS Hydrogen Sulfide Detector H₂S Monitor 0~100ppm Electrochemical H₂S Sensor LED Alarm with LCD Screen Backlight Portable Tester

£57.90 on Amazon

#20 Salinity & Temp Meter GAIN EXPRESS Salinity & Temp Meter Pen Type Salt Water Quality Tester ATC NaCl, 9999 ppm / 100.0ppt/ 10% / 0.95-1.08 SG Measurement Units 4-in-1 Checker for Saltwater Aquarium Pond Food Pool Cooking Seawater

£36.90 on Amazon