Description

An accurately balanced, strongly magnetised magnetic needle is mounted with a hardened steel pivot that operates in a jewel cup bearing. The needle can be simply withdrawn for reversal. The inclination scale is made of chrome brass and graduated four times in degrees from 0-90. The case is composed of nonmagnetic cast alloy and duco coated. It has an easily detachable plate glass pane and rotates entirely on a heavy brass base, which is measured by a brass chrome. dial 0-360?. It is equipped with a levelling screw and spirit level.