- Freehold Township, NJ, USA
- Speedfam grinding machines
Optical Flatness Measuring System. Devised for optically measuring flatness on non-reflective surfaces in the problem range of 0.0001 in. to .100 in. Without fixturing or calibration, the unique Chek-Flat pattern shows where and by how much a surface is out-of-flat. No anvils.
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