
Surface plate; very smooth surface produced by lapping
- Made:
- 1919 in unknown place

Surface plate about 6" x 6" having a special smooth finish
Details
- Category:
- Industrial Metrology
- Object Number:
- 1919-258
- Materials:
- cast iron
- Measurements:
-
overall: 2.3622 x 6.1024 x 11.811 in.; 6 x 15.5 x 30 cm
- type:
- surface plate
- credit:
- Budgett, H.M.