| Manufacturer | Measurement Description |
| Engis®/Hyprez® | Single-Side Lapping and Polishing (Diamond Application): |
| >>>> | 28-inch application machines: |
| >>>> |
------Capable of holding very close ------tolerances --less than 0.000010" ------(1 Lightband) and a surface finish ------of 50 Angstroms (0.2 microinches). |
| >>>> | ------Thickness control to 0.0001" |
| >>>> | ------Part sizes up to 16" diameter. |
| Engis® | 15-inch production machines: |
| >>>> | ------Capable of holding very close tolerances --------less than (1 Lightband) and a surface ------finish of 50 Angstroms. |
| >>>> | ------Used for automatic close-tolerance ------production runs. |
| Lapmaster | 24-inch production machines: |
| >>>> | ------Used for roughing the material ------down, before final polish.. |
| P.R. Hoffman®/Engis® | Double-Side Lapping and Polishing: |
| >>>> | Capable of holding very close tolerances. |
| >>>> | ------Capable of handling 6-1/2" diameter ------disks to thickness under 0.010". |
| >>>> | ------Used mainly for diamond applications. |