Gunner's folding rule
Gunner's folding rule in four sections, bone with brass mounts.
Scales:
faces - 0-24 inches
edge 1: a) (shot dia): up to 42; non-linear scale; b) (gun dia): up to 42, non-linear; slightly longer than a
[numbers on each scale: 1/2, 1, 11/2, 2, 3, 4, 6, 9, 12, 18, 24, 32, 36, 42]
edge 2: 0-200; linear scale; 200 = 24 inches
Scales:
faces - 0-24 inches
edge 1: a) (shot dia): up to 42; non-linear scale; b) (gun dia): up to 42, non-linear; slightly longer than a
[numbers on each scale: 1/2, 1, 11/2, 2, 3, 4, 6, 9, 12, 18, 24, 32, 36, 42]
edge 2: 0-200; linear scale; 200 = 24 inches
Object Details
| ID: | TOA0063 |
|---|---|
| Type: | Gunner's folding rule |
| Display location: | Not on display |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall (extended): 4 mm x 610 mm x 15 mm |
| Parts: | Gunner's folding rule |
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