HHIP 4401-0011 Granite Surface Plate, Grade B, Ledge 0, 12" X 9" X 3"
by HHIP
- Surface plates are checked by an auto-collimator for overall accuracy assurance, Accuracy is ±0001", Granite surface plates meet or exceed Federal Specifications GGG-P-463C, Includes a certificate of inspection, Note that these are not NIST traceable