Hygrometers; Thermo-hygrometers; Apparatus for testing gas, liquids and solids; Apparatus for testing vehicle brakes; Combustible gas concentration detectors; Digital multimeters; Digital weather station instruments; Electrical voltage tester pens; Electronic apparatus for electropysiological measurement and testing of cells; Gas testing instruments; Infrared thermometers, not for medical purposes; Insulation resistance meters; Laser pointers; Laser rangefinders; Lasers for measuring; Measuri...