Edge bar needle
Edge bar needle used to align compass bowls in the magnetic meridian for testing the errors of compass cards.
Object Details
| ID: | ACO1477 |
|---|---|
| Type: | Edge bar needle |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | Unknown |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 194 mm |