+
-
Compass card
Card-Mica covered with paper, white with black and white markings, graduated to 1/4 points and quadrantally in degrees.
Needle- Four light bar edge needles, composed of two laminations of rolled clock spring steel, 2 x 7.25" and 2 x 5.25" long and 0.5" deep.Mounted 1.75" apart ,all attached to a light metal ring which is screwed to the card.
Pivot- Cone-shaped brass pivot cap with jewel at top, screwed through centre plate of light brass framework consisting of four long bars radiating from centre, each carrying sliding weights, secured to the metal ring of card.
Needle- Four light bar edge needles, composed of two laminations of rolled clock spring steel, 2 x 7.25" and 2 x 5.25" long and 0.5" deep.Mounted 1.75" apart ,all attached to a light metal ring which is screwed to the card.
Pivot- Cone-shaped brass pivot cap with jewel at top, screwed through centre plate of light brass framework consisting of four long bars radiating from centre, each carrying sliding weights, secured to the metal ring of card.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | ACO0962 |
|---|---|
| Type: | Compass card |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | 1840 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 23 mm; Diameter: 190 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.