650590 GAUGE FEELER BEARING 090 042, RANGE 0.40-0.70MM

Used for measuring main bearing clearance of marine engine.When the rod "S" has been pressed through the pipe "R", the pipe "R" can be pushed away from the brass by further pressing on the rod "S" and when a distance "a" is obtained it is easy to feel the fit of the feeler in the clearance.