+
-
Dry compass
Card- Mica covered with paper, white with black markings, graduated to 1/4 points. At centre of card is a hole 1.15" dia. to accommodate pivot.
Needle- Four light edge bar needles each composed of two laminations of steel 2 x 3.5" and 2 x 2" long, 0.25" deep, each 1" apart. Attached to a light metal ring 3.5" dia. which is screwed to card.
Pivot- Inverted type (missing) carried in double gimbals. Only one being present, secured by brass brackets to inner needles.
Needle- Four light edge bar needles each composed of two laminations of steel 2 x 3.5" and 2 x 2" long, 0.25" deep, each 1" apart. Attached to a light metal ring 3.5" dia. which is screwed to card.
Pivot- Inverted type (missing) carried in double gimbals. Only one being present, secured by brass brackets to inner needles.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | ACO0959 |
|---|---|
| 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: 15 mm; Diameter: 95 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.