Oil
Wax
Kerosene
Petroleum jelly
Start wringing with the largest slip gauges
Maximum number of block
Built with grade 0 accuracy
Start wringing with the small slip gauge
Filing
Turning
Grinding
Lapping
Silicon carbide
Diamond
Boron carbide
Fused alumina
To allow expansion
To provide clearance
To retain the abrasive
To permit minor adjustment
