Compass housing for use by e.g. winter sportsman, has fastening device including screw and fixing nut with amble piece for joining device at frame and/or disk for pointer or circular arc disk

摘要

The housing has a cylindrical frame (1) and a disk that is provided as a plate or lens formed from plastic or glass. A fastening device includes a screw and a fixing nut (5) with an amble piece for joining the fastening device at the frame and/or the disk for a pointer (6) or a circular arc disk (7). A circular arc of the arc disk encloses a full circle angle or a semi-circle angle. A freely swinging magnetic needle is provided in an interior of a base plate.