I just got one of these Vibra Tachs. I need it to measure rpm on my diesel power plant. I have the instructions and read them but I'm still not clear on it's operation so these are a few questions to those who have used one.
Do you hold the device on a flat part of the engine and slowly turn the inner ring until the wire comes out far enough to start to vibrate? If you go further out does the wire stop vibrating? How much of a vibration arc does the wire achieve? Less than a quarter inch? eighth inch? etc... Any help will be appreciated. Thanks.
This message was modified Jan 17, 2008 by borat
