The SA40 Ultrasonic Wall Thickness / Material Thickness Gauge (part number SA40) is a hand-held gauge for measuring the thickness of metallic and non-metallic materials from one side, where there is no access to the opposite face. This single-sided capability matters for in-service inspection: pipes and pressure vessels can be checked for wall loss due to corrosion without cutting, dismantling or shutting equipment apart, and the data informs whether a component is still within safe limits.

The SA40 Ultrasonic Wall Thickness / Material Thickness Gauge uses a pulse echo technique with a dual probe. After a simple calibration to a known thickness or to the material's sound velocity, it gives fast, accurate readings on a backlit 4-digit LCD. The measuring range is 0.8 to 225.0 mm with 0.1 mm resolution, and the velocity range covers 500 to 9,999 m/sec, so it suits aluminium, titanium, plastics, ceramics, glass and other materials that conduct ultrasonic waves well, provided the top and bottom surfaces are parallel.

The SA40 Ultrasonic Wall Thickness / Material Thickness Gauge reads in millimetres, refreshes the display every second and auto shuts off after 5 minutes of non-use. It runs on two 1.5 V AA alkaline cells, operates from 0 to 40 degrees C and 20 to 90% RH, measures 124 x 67 x 30 mm and weighs 240 g. It is used across manufacturing, maintenance and corrosion monitoring on raw materials, component parts and assembled machinery. Supplied by BAMR, South Africa's authorised distributor of precision measurement and inspection instruments.