H018293 HR1 ALTITUDE SLIDE RULE.
A HR1 altitude slide rule with original carrying tube that is manufactured by Dennert & Pape Hamburg reference Fl 23892, device number 127-136 A-1. This type of slide rule was used for converting measured celestial altitudes using a spirit level sextant or spirit level octant, in all larger long-range reconnaissance and transport aircraft such as the Blohm & Voss Bv 138, Bv 222, Focke-Wulf Fw 200, Junkers Ju 290, and Dornier Do 26. The container measures approximately 29cm long with a 72mm diameter.
GRADE ****1/2 PRICE $2,856.00
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