Digital Chainsaw Tachometer Tacho LCD Display Hour Meter
Digital Chainsaw Tachometer Tacho LCD Display Hour Meter Digital Hour Meter Tachometer - works on 2 stroke and 4 stroke engines! This tacho engine monitor has a self powered LCD hour meter, rev counter (tachometer) and maintenance meter. A tachometer measures the revs (RPM=revolutions per minute) of an engine. This unit is powered by an internal lithium battery. A wire around the spark plug cable of the engine provides a signal for this unit to display both the RPM and to also indicate t