Great for helping to tune your chainsaw and putting together what your ears hear with a measured RPM.
Auto on/off
Lights up green for midnight tach runs
Flashes red at predetermined RPM limit
Remembers highest rpm hit
Adjustable view
Replaceable battery
This is probably the most convenient to install tachometer I've seen for a chainsaw. It's molded round to mate up with a chainsaw handle with a rubber o-ring to hold it in place.
Video - https://youtu.be/zxnzNiVP_UQ?si=VR6WiAZPQobVw4ez
Tach
Tachometer
Tachometers