+
-
Dry compass
Dry compass
Card: Mica covered with paper. Brownish with black markings graduated to half points and in degrees 0 - 180 East and West from North. Hollow centre with metal angled bridge holding pivot spike. Two slits in card to accommodate needles. Royal Coat of Arms at North point. Two weights screwed on to underside of card.
Needle: Two edge bar needles attached at centre so are free to show dip. 6" (15.3 cm) x 1/4" (0.6 cm) deep.
Pivot: Brass and steel spike suspended above card by bridge.
Card: Mica covered with paper. Brownish with black markings graduated to half points and in degrees 0 - 180 East and West from North. Hollow centre with metal angled bridge holding pivot spike. Two slits in card to accommodate needles. Royal Coat of Arms at North point. Two weights screwed on to underside of card.
Needle: Two edge bar needles attached at centre so are free to show dip. 6" (15.3 cm) x 1/4" (0.6 cm) deep.
Pivot: Brass and steel spike suspended above card by bridge.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | ACO1006 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | Gray |
| Date made: | 1854 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 33 mm; Diameter: 185 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.