A gauge used to test the compression in the cylinders . A poor compression reading can indicate that there is leakage through the valves or the piston rings . In two stroke engines, it could indicate that there is poor primary compression because of a leak in the crankshaft seals.
COMPRESSION GAUGE
Meaning of COMPRESSION GAUGE in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012