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This ruler was used to measure the shooting range of various weapon systems
met lange band
born in Unterföhring and Grubhöh
These instruments were commonly used by the German army during the First World War
title of which is:Von der Ausbildung im Fliegerhorst
Kriegsmarine F-Tafel 1941 III Auflage 2154 u-boot Kriegsmarine arsenal Gotenhafen Wehrmacht panzer gefreiter foto This ruler was used toKriegsmarine F Tafel III. Edition Hamburg 1941. This book is extremely rare and was mainly used by U boat crews. The book was used to determine the exact position of a ship or submarine on the open sea using the stars, the sun, or the moon. Navigators measured the angle of a celestial body above the horizon with a sextant. The F Tafel contained the mathematical tables needed to quickly convert these measurements into usable altitude lines(navigation
