Engine Piston Deck Bridge. Measure Top Dead Center, crank stroke. Quality standard deck bridge, 3 holes and mounting for dial indicator or Digital caliper. Magnetic for holding the deck bridge to the block. Check Piston deck height or piston rock with 2 dial indicators. Use with other instruments for checking TDC
Check crank stroke with a dial caliper.
Be careful with a .013 over crank, make sure you have a good repeatable digital caliper
Gauge or caliper not included.