TruTach II Digital Propeller Tachometer

The new all digital TruTach II works on production aircraft as well as ultra-light and homebuilt applications with no connection to the aircraft necessary. It's usable inside or outside the cockpit for convenient operation and measures RPM at any power setting. It works on single or multi-engine propeller aircraft having 2, 3, 4, or 5 blades. Only two controls: on-off and blade quantity select. Never needs adjustment. Check calibration anytime with a standard light. Specifications:

Optical operation - No physical connection required
Extremely accurate (+/- 1 RPM) at all speeds with no adjustment necessary
Direct display for 2,3,4,or 5 bladed props
RPM Range 240 - 7000 RPM
Standard 9 Volt battery lasts 150 Hours
Automatically turns power off if you forget
Low battery indicator
Digital signal filtering for a stable display
Compact 3.8 x 2.4 x 1.5 inches for portable use, weighs just 4 ounces
Impact resistant carrying case for durability and convenience
5 Year Warranty