细节
a gimbal mounted liquid filled compass
Inscribed Observator Rotterdam on the compass card and engraved Pilot No. 564107 on the rim - in teak case, 39cm. wide; a wet and dry bulb thermometer in bakelite case embossed Haffnni with outer leather case; and a brass hub cap (3)
Inscribed Observator Rotterdam on the compass card and engraved Pilot No. 564107 on the rim - in teak case, 39cm. wide; a wet and dry bulb thermometer in bakelite case embossed Haffnni with outer leather case; and a brass hub cap (3)