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The Mountbatten Ruler (Patent Applied For) For Chart Work, etc.
Parallel rule instruction booklet.
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Object Details
| ID: | NAV0615.1 |
|---|---|
| Type: | Parallel rule instruction booklet |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | Unknown |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 211 mm x 150 mm |
| Parts: |
Parallel rule
|