Emergency wrist compass WW2 (armkompass) for german pilots and crew members. Made in Prague by the company "Kadlec Instrumentenfabrik" was taken on the right wrist. This compass, secon pattern, was used by the survivors to calculate the position if forced to bail out or after a crash. The compass is marked on the back AK 39 – Fl 23235 – 1 and fully functional.The strap is its own original. Excellent condition.