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Spider card - aircraft compass
Type P.6, spider card
Eight elements, the tip of each is turned down. N point indicated by a cross. Centre of spider is fitted with float dome which incorporates spike for pivot in its base.
Needle: Two needle magnets are mounted below the spider.
Pivot: Inverted type, cup at top of steel stem engages pivot spike in float. Stem attached to silvered brass dome.
Eight elements, the tip of each is turned down. N point indicated by a cross. Centre of spider is fitted with float dome which incorporates spike for pivot in its base.
Needle: Two needle magnets are mounted below the spider.
Pivot: Inverted type, cup at top of steel stem engages pivot spike in float. Stem attached to silvered brass dome.
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Object Details
| ID: | ACO0399 |
|---|---|
| Type: | Spider card - aircraft compass |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | 1937 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 45 mm; Diameter: 70 mm |