• Reads in inches of water.
• Reads vacuum 40 inches of water.
• Reads pressure 40 inches of water.
• Vacuum is displayed as negative and Pressure is displayed as positive.
• Has a 3.5 digit display with a 1 15/16 " X ¾ " view area.
• Powered by a 9 volt battery and indicates LOW BAT when it needs to be replaced.
• Include is a clear vinyl tube 24" long and can be replaced.
• Has 274 graduations in one PSI of pressure.
• Comes with a blue vinyl protective cover that can be removed to replace the battery

Digital Crankcase Vacuum Tester

Extremely accurate and simple tool for measuring crankcase vacuum.

Modify an old dipstick or oil fill plug by installing a barbed connector and attach the hose from the gauge.

Check crankcase vacuum with engine running at top no load speed.

Part #: 19495