... meter,infrared thermometer, anemometer, sound level meter, noise meter, vibration meter, ultrasonic thickness gauge, film ... hygrothermograph, high voltage megohmmeter, ground resistance tester, electric leakage switch tester,gas detector.2.Specifications ModalTL1358StandardA: IEC651 ... 110, 80~130frequency weightingA(simulative ear)& C(noise of machine itself)time characteristicsfast/low reaction ...