Description: Ultrasonic Thickness Gauges is a high precision instrument used to measure the thickness of the wall. These gauges are useful for steel (mild steel, stainless steel, cast steel, cast iron and alloys) aluminium, copper, lead, tin, brass, alloys, plastics (pvc, pp, ldpe, hdpe) and glass ceramic. The instrument is supplied with a probe and calibration master for MS on which the instrument is to be calibrated with a drop of oil as a couplant. After calibration the instrument is ready to check thickness of MS articles just from one side with use of oil as couplant. The probe creates and transmits ultrasonic pulses from the top surface of the test-piece and after traveling through the material they are reflected at the bottom surface back to the probe. As speed of ultrasonic waves vary with material, a calibration Master for that material (other than MS) is needed which is supplied as optional accessory. These gauges are highly compact in design, light weight, quick, sturdy and handy. It is portable and battery operated. It works remarkably well even on rough and curved surface. It is highly reliable as it implements the modern solid state technology. It is provides with a choice of rechargeable Ni-Cd cells and dry cells. It generates digital readout, thereby eliminates human error. The instrument displays instantly the thickness of the test-piece with reading in digits with accuracy + 0.1mm.