Utilized by German pilots during WWIIMade by Kadlec in Czechoslovakia and introduced as AK-39 Armband-Kompass (wrist compass) 1939 to the Luftwaffe. The Luftwaffe register number is Fl23235-1 with Fl standing for Fliegermaterial i.
The diameter is 60 mm. The liquid inside is pure petroleum (kerosene) and can be exchanged or refilled during inspection. This model allowed the setting of a course by means of two white rotating semi-circular sheets located at the underside.
Moreover, rifle-type sighting aids allowed the taking of a bearing (on the ground if downed). See my other auctions for similar items such as WWII collectible uniforms, pouches, belts, ordnance, headgear, and other Russian and German Eastern Front War relics, photographs and USSR Communist propaganda items. Funds within 10 days of notification. The item "WW2 GERMAN GERMANY PILOT LUFTWAFFE KADLEC AK39 NAVIGATION WRIST COMPASS" is in sale since Friday, June 14, 2013. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Personal, Field Gear". The seller is "doubledecker_auctions" and is located in Boston. This item can be shipped worldwide.