Original U.S. WWII AAF Astro-Compass Mk. II by The W.W. Boes Co. in Original Case British Uniform of Norwich

of Norwich

and has 12 different compartments

It is marked on the back with RZM and maker code U

The liner is ink stamped 55 on one of the rear fingers

A training variant used by the Finnish armed forces fires 7

Original U.S. WWII AAF Astro-Compass Mk. II by The W.W. Boes Co. in Original Case British Uniform of NorwichOriginal Item. Only One Available. At high latitudes where magnetic variation can be erratic and the angle of magnetic dip can be steep, magnetic compasses are essentially useless. This instrument, on the other hand, indicates true north when pointed at a known star. It was made for military use during World War II, and surplussed soon thereafter. It is well suited for aligning a boats compass while away from shore based magnetic interference. It is