NIGHTHOUSE, with gimbal-suspended compass, The Ontario Hughes Owens Co. Ltd, first half of the 20th century, bronze, intended for oil-powered lighting, the compass numbered 6605-99-460-6389, plate marked: Patt 0183, No C 244 [...],
Illustration showing a simple compass in the shape of a fish. The lodestone is suspended on a thread. From Athanasius Kircher Madness sive de arte Mapnetica, Cologne ,1643 Stock Photo - Alamy
Science Toys Wooden Suspended Compass with Magnet Stem Assembly Kits - China Wooden Assembly Toys and Laser Cut Wooden Stem Kits price | Made-in-China.com
Suspended Mining Compass Precision Plastic Gradiometer Antimagnetic Mine Hanging Compass With Tilt Gauge Dql100-g1 - Tool Parts - AliExpress
NIGHTHOUSE, with gimbal-suspended compass, The Ontario Hughes Owens Co. Ltd, first half of the 20th century, bronze, intended for oil-powered lighting, the compass numbered 6605-99-460-6389, plate marked: Patt 0183, No C 244 [...],