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Patt 499
An optical range-finder made in black painted aluminium. Graduated with two scales; for mast head height of 40 ft and mast head height of 30 ft.
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Object Details
| ID: | ACO1247 |
|---|---|
| Type: | Rangefinder |
| Display location: | Not on display |
| Creator: | Ross Ltd |
| Date made: | circa 1940 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 20 mm x 195 mm x 90 mm |