Mechanical aircraft tachometers are notorious for inaccuracy. With PROPTACH you can now protect your expensive engine investment during take-off and cruise by operating at the exact design RPM, and thus, obtain the full design performance and book fuel flows. The Aircraft Tachometer that works like a camera.
New PROPTACH-3 with the automatic power-off feature saves the battery from Inadvertent rundown.
It takes a "picture" of your propeller once per second and displays the RPM.
It works from inside or outside the cockpit with any color propeller.