![TAKCAL Tester](https://d27wgn5g4t3wja.cloudfront.net/img/0a71df7d-1422-08df-aa54-bda4e1df999b/150627.png)
TAKCAL Tester
H391T-56-1 - Howell Instruments, Inc. (Howell)
Measures and displays individual tachometer speeds in percent RPM
Connects at flight deck navigator station for signal and at St245 for power
H391T-56-1 - Howell Instruments, Inc. (Howell)
Measures and displays individual tachometer speeds in percent RPM
Connects at flight deck navigator station for signal and at St245 for power