SLI Tachometers is the world's leading supplier of mechanical aircraft tachometers for the aviation industry.

Mechanical Aircraft Tachometer Specialist

SLI Avionics maintains a state-of-the-art aircraft instrument production facility that engages in designing, manufacturing, testing and assembly primarily aimed at the aircraft industry. Since 1977 we have supplied more than 30,000 airplanes with mechanical recording tachometers, aircraft tachometer accessories, aircraft tachometer cables, vacuum gauges and switches, as well as many other non-critical avionic instrument accessories. Based out of Hot Springs, Arkansas, SLI currently manufacturers mechanical aircraft tachometers for any single piston engine aircraft from original equipment manufacturers as well as support the spares market. SLI is currently FAA approved and holds the latest revision on TSO C49b for the Mechanical Recording Aircraft Tachometer.

SLI currently stocks a wide assortment of aircraft tachometers for the following aircraft:

American Champion | Cessna | Diamond | Mooney | Piper

SLI Tachometers offer custom screen printed dials, internal lighting, anti-glare glass, pre-set hours and a variety of pointer options for all of our aircraft tachometers. We can also replace your old A/C, Cessna, Diamond, Piper, Mooney, Stewart Warner or Mitchell aircraft tachometer with a much cleaner look and improved accuracy..