Automatic Computing Sights, Types K-3, K-4, K-5 Handbook RCAF 5 inches diameter and 6

5 inches diameter and 6

Winter Jungingen Hohenz

Pipsqueak used an aircraft's voice radio set to periodically send out a 1 kHz tone which was picked up by ground-based high-frequency direction finding (HFDF

part number 139001-01-04

Automatic Computing Sights, Types K-3, K-4, K-5 Handbook RCAF 5 inches diameter and 6This is an original WWII era Preliminary Handbook of Service and Maintenance Instructions for the Sperry K series turret mounted Gun Sight, K 3, K 4, and K 5, dated Jan 1942. The K series sights were found in US Army Air Force bombers such as the B 17 Flying Fortress and B 24 Liberator, and used to fire 50 caliber machine guns. This 30 page handbook includes text, tables, illustrations, and fold out diagrams. It is in reasonable condition given its