+
-
Dry compass
Card-Mica covered with paper, white with black and white markings, graduated to 1/4 points and quadrantally in degs.
Needle- One solid edge bar needle, 7.65" long having a heavy centre boss with an aperture, 1.15" dia. in which the pivot cap is mounted. Two brass strips carrying sliding weights are fitted in E-W direction. The whole is mounted on a light metal ring screwed to card.
Pivot- Heavy cone-shaped brass pivot cap mounted in central aperture in double gimbals and attached to needle by two brass knee pieces.
Needle- One solid edge bar needle, 7.65" long having a heavy centre boss with an aperture, 1.15" dia. in which the pivot cap is mounted. Two brass strips carrying sliding weights are fitted in E-W direction. The whole is mounted on a light metal ring screwed to card.
Pivot- Heavy cone-shaped brass pivot cap mounted in central aperture in double gimbals and attached to needle by two brass knee pieces.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | ACO0949 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Henry Barrow & Co |
| Date made: | 1837-1840; 1837-40 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 32 mm; Diameter: 195 mm |
Your Request
If an item is shown as “offsite”, please allow eight days for your order to be processed. For further information, please contact Archive staff:
Email: library@rmg.co.uk
Tel: +44 (0)20 8312 6516 (during Library opening hours)
Click “Continue” below to continue processing your order with the Library team.