|
Date: |
|
Description: | Exp.Bb No 1 Barrow No 16
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.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
More Like this...
-
Dry compass
71/4 No15 B4/Card s/1839 2910/apl.151844/28-0…
-
-
-
-
-
-
-
-
-
|