Equus Compression Tester

• Large, easy-to-read 2-1/2" dial face with dual-calibrated and color-coded scales
• Universal rubber nose cone fits all spark plug openings
• Heavy-duty, presision Bourdon tube meter movement
• Complete illustrated instructions included

Works on conventional, electronic and computerized Domestic and Import vehicles.
Helps to measure the efficiency of parts that affect cylinder pressure.

Simple Installation!