Dry card compass

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Invented by Capt. R.E. Kater Box 8.8" x 8.8" x 4.5" (22.5 x 22.5 x 11.4cm) This dry card is fitted with a prism on the back sight and a hair line on the fore sight. One flat nedle is provided. The cap carries an agate bearing. The bowl carries two levels and the stand is provided with three levelling screws. The card, coloured green, is a rim 3/4" wide carried on the needle and a brass spoke at right angles to the needle. Graduation 360 degs in 15'.

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Object Details

ID:	NAV0296
Type:	Dry card compass
Display location:	Not on display
Creator:	Unknown
Date made:	After 1821
Credit:	National Maritime Museum, Greenwich, London
Measurements:	Overall: 85 mm x 200 mm x 200 mm x 168 mm
Parts:	Dry card compass Dry card compass box (NAV0296.1) Dry card compass fittings (NAV0296.2) Dry card compass fittings lid of box (NAV0296.3) Dry card compass fittings base of box (NAV0296.4)