Tests for fuel line pressure and vacuum leaks. Check for leaky valves timing fuel pump vacuum pressure and gas line leakage. Easy to read gauge with 3 foot hose and vacuum hose adapter fitting. Gauge measures vacuum from 0 to 28 HG in 1 increments. (0 to 700mm HG in 50mm increments). Measures pressure from 0 to 15 psi in 1/2 psi increments (0-1Kg/cm2 in .1 Kg/cm2 increments).
