Reed Instruments Thickness Gauge with Calibration Certificate, 0.04" - 11.8" (1 mm - 300 mm), Digital, Ultrasound (R7920-NIST)

Thickness Gauge with Calibration CertificateA portable device used for non-destructive measurement of the thickness of metal and other materialsUses high-frequency sound waves to determine the thickness of a material by measuring the time it takes for the sound waves to travel from the gauge to the material and backEasy-to-read backlit LCD displayUser-selectable units of measure (in/mm)Internal memory stores up to 300 measurementsDisplays sound velocity at the touch of a buttonUser-adjustable High/Low alarmsAutomatic material calibrationAuto shut-off and low battery indicatorSuitable for use by technicians and inspectors in a variety of industries