GTS Gauges Transmitters Switches PTY LTD | Industrial Instrumentation GTS Gauges Transmitters Switches is your first choice for industrial instrumentation. GTS has over 15 years’ experience in supplying quality parts and providing exceptional sales service to all our clients. With a storefront located in Midvale, Western Australia and a fully-equipped NATA Accredited lab, GTS stocks and supplies only the very best, and if we don't have it in-store, ...