HHIP 4401-1812 Black Granite Surface Plate Grade A Ledge 0 18 Length x 12 Width x 3 Height +/000050 Accuracy 80 lb Weight
- Surface plates are checked by an auto-collimator for overall accuracy assurance..
- This granite surface plates meet or exceed Federal Specifications GGG-P-463C..
- Accuracy is +/-.000050" Grade A (Grade 0)..