Dry Card Compass – Jb. de Jong & Bruyn, Amsterdam, 19th century
Gimbaled dry card compass in a copper bowl. The compass is gimbaled mounted in a wooden, dovetaled case of oak with sliding cover. The inside of the bowl is painted white with lubber’s line. On the rose 32 points and the name of the maker. On the rose, north with fleur de lis. In the middle of the rose a bras top with sapphire.
At de underside of the rose is a heavily compass needle mounted with pins on the rose. Pieces of sealing-wax at one side compensate the rose against inclination. The rose is not compensated for magnatic variation.
Made by Jacob de Jong and W.Bruyn, compass makers from 1816-1866, Oude Teertuinen, Amsterdam.
The decorated, black rose suggests an early specimen.
Date: ca. 1820
HWL case: 17×25,5×25 cm (6,7x10x9,9)
D compass: 118 cm (7,1 in)
Signed: Jb DE JONG & BRUYN IN AMSTERDAM