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Defense industries

 Subject
Subject Source: Library of Congress Subject Headings
Scope Note: Industries producing war weapons, supportive equipment, and supportive services.

Found in 1 Collection or Record:

Sperry Gyroscope Company anti-aircraft fire director schematic diagram and graduation certificate

 Collection
Accession: 2505
Abstract:

The Sperry Gyroscope Company researched, developed, and manufactured navigation equipment; three of the premiere products were the marine gyrostabilizer, the gyrocompass, and the high-intensity searchlight. The company was founded by Elmer A. Sperry (1860-1930) in 1910. After Elmer Sperry's death in 1930, the engineers at Sperry Gyroscope continued to develop increasingly sophisticated anti-aircraft devices, fire control, and automatic pilot systems. Directors were developed to operate anti-aircraft weapons systems and utilized observational data to calculate firing solutions. The collection comprises a drawing for an anti-aircraft fire director and a graduation certificate issued to James A. Wittie (1918-2010) for completing a four-week training course in the principles and use of the M-4 and M-7 directors.

Dates: 1942