Collecting Military Compasses


Prismatic fluid compass 



This prismatic fluid compass looks like a British MK3 Compass. There are differences. The fluid container is completely closed. No possibility to fill it  in case of bubbles. It's a large compass, larger than the MK3. It contains a clinometer (watch the steel bullet) 

This compass was also produced by MOM (Magyar Optikai Művek, Hungarian Optical Works) in Budapest.

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