|
Date: |
|
Description: | An ingenious extemporised bearing plate found on a French trawler. It consists of a water-tight bulkhead electric light fitting (brass) which has been fitted with gimbals, diameter 12.2" (31cm) and balanced so that its glass is horizontal. The flat glass is fitted with a spigot for an alidade and a paper compass card, graduated 0-180 degrees through E & W, is stuck to its underside. The alidade is of copper with fixed sights, one sight carries a slit; the other an open frame (thread missing).
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | bearing plates | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
More Like this...
-
-
graphometer
Graduations-Semicircle graduated 0-180, 180-0 by…
-
-
-
-
-
-
-
-
Alidade
Hersteller: C.Plath Hamburg / Baum:…
|