1921 TACHOMETER TESTER/115V FM-STU12 as well as an optional

as well as an optional audio alarm are also included

Part 50A has a frequency range from 25 to 60 MHz and rated for 50 watts of power

The Klixon(R) 5TC7 Series single–phase TC devices are the smallest

No need to divert attention away from flying the aircraft

red LED lamps

1921 TACHOMETER TESTER/115V FM-STU12 as well as an optionalThe Model 1921 Tachometer Tester is used for the testing and calibration of electrical and mechanical tachometer generators and indicators. Two variable speed brushless motors eliminate the need for gears while providing for a testing range of 10 to 50,000 RPM. Each motor shaft is controlled by closed loop system utilizing hall encoder feedback and a digital motion control card. The result is a very reliable system with a speed accuracy of 0. 005%.