Gauge
Description
A steel gauge plate with 27 round, counter-sunk holes (one hole has a section cut away), 4 cam-shaped holes, 2 holes with flat feet-like cutouts on one side, 14 graduated rectangular notches along one edge, 2 rectangular and 3 V-shaped notches along opposite edge. The counter sunk round holes are stamp numbered; top row 1 to 7, middle row 1 to 10, and bottom row 1 to 12 but 11 and 12 have not been drilled. Round, countersunk holes all numbered.