The new TG-11 Wall Thickness Gauge accurately measures wall thickness and the extent of corrosion of all metals, ceramics, glass and most rigid plastics . The TG-11 measures the thickness on hard materials including corrosion of tank walls, piping and hull plates

• Inspection of metals including steel, cast iron ( malleable, and spheroidal graphite ), aluminium, copper, brass, titanium, sheet metal, storage tanks, ships, structures and piping systems.
• Inspection of non-metals including glass, ceramics and hard plastics

FEATURES

• METRIC OR IMPERIAL THICKNESS MEASUREMENTS -Direct readout of thickness inches or mm Built in test plate
• Calibrate for a wide range of rigid materials
• Special probes for high temperature
• Easy thickness measurements on common materials

Ultrasonic thickness gauges use ultrasonic sound waves to measure wall thickness. Different types of materials have different inherent sonic velocities. ( sound travels at different speeds through different materials ).

For example the acoustic velocity of steel is 0.2330 inches/microsecond and that of aluminum is 0.2500 inches/microsecond. The TG-11 can be set to any acoustic velocity depending on the material being measured. The instruction book includes a table of acoustic velocities for common materials.

Even if you don't know the acoustic velocity or your material you can measure it with the TG-11 provided you have a sample of material of known thickness to start with.