Distance between outer point of roller

Distance between inner point of roller

Distance between centre point of rollers

Distance between the edges of sine bar

Surface plate

Sine bar width

Sine bar length

Slip gauges height

Developing inaccuracies

Bright spots will be visible

Obstruct component movement

Lapping compound will be sticky

Workpiece will cut the lap

Accuracy can't be obtained

Lap will cut the workpiece

Lapping operation leaves high spots

Cast iron

Aluminium

Bronze or zinc

Copper or brass