+
-
Dry compass
Card- Mica with painted markings. Black with white markings graduated to 1/4 points and quadrantally in degrees. Has a silver metal circumference graduated to 20' of arc. The quadrantal graduations are inverted to be read through a prism. Card is attached to framework by 10 screws.
Needle- Two edge bar needles, 6.75" (17.2cm) long and 0.5" (1.6cm) wide, are attached to framework. Framework has two sliding brass weights for balancing.
Pivot- Cone-shaped brass pivot cap at centre.
Needle- Two edge bar needles, 6.75" (17.2cm) long and 0.5" (1.6cm) wide, are attached to framework. Framework has two sliding brass weights for balancing.
Pivot- Cone-shaped brass pivot cap at centre.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | ACO0932 |
|---|---|
| Type: | Dry compass |
| Display location: | Not on display |
| Creator: | West & Co |
| Date made: | 1860 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 25 mm; Diameter: 204 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.