Compression Tester

For testing & recording maximum cylinder compression in gasoline engines. Stores maximum compression value up to 12 cylinders. Backlit LCD for easy to read from any angle. Uses standard 9V battery. Automatically shuts off after 3-minutes of non-use. Digital compression tester comprising of test gauge with rubber boot, 10" (250 mm) high-pressure hose and female quick-change coupler. 14 mm standard reach thread x 6.5" (165 mm) hose adapter 14 mm reach thread x 12" (305 mm) hose adapter 18 mm standard reach thread x 12" (305 mm) hose adapter. 18 mm reach male thread x 14 mm standard reach female thread plug adapter. 10 mm male thread x 14 mm standard reach female thread plug adapter. 12 mm male thread x 14 mm standard reach female thread plug adapter. Air hold adapter.