Cam Shaft

Connecting rod

Rocker arm

Main shaft

Crank Shaft

Fly wheel

Self motor

Gear box

Half

Equal

Double

Triple

Torque wrench

Valve spring lifter

Box spanner

Scraper

Difference in dia measured top to bottom

Difference in dia thrust to non thrust side of cylinder

Difference in dia measured only at top

Difference in dia measured only at bottom