A stepped hole punch tool used to make holes in metal plates. The plate (B) is placed under the grip (K), and the hole is made by pushing (G) to the metal to the desired diameter determined by the steps.
Grimshaw, Robert Modern Workshop Hints (Philadelphia, PA: Sampson Low Marston & Company LTD, 1902)
2452×2400, 429.9 KiB
1024×1002, 69.0 KiB
640×626, 37.2 KiB
320×313, 15.0 KiB