U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0
U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0

U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0

U.S. Navy Alidade Pelorus Stand by Sperry Gyroscope Company, Mark XXXI, Mod 0

Regular price $3,150.00
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An exceptional example of mid-20th-century naval navigation technology, this U.S. Navy Bureau of Ships Self-Synchronizing Alidade Pelorus Stand was manufactured by the renowned Sperry Gyroscope Company, Brooklyn, New York, a key supplier of precision instruments for the U.S. military. This instrument, Mark XXXI, Mod 0, Serial No. 320420, was built under Navy contract NXss 17019 and bears its original inspection tags, confirming it passed rigorous Navy testing before deployment. The pelorus stand is crafted in a striking combination of polished aluminum and solid brass, featuring a protective domed brass cover that reveals a beautifully preserved gyrocompass repeater dial. Designed to interface with a ship’s gyrocompass, the self-synchronizing mechanism allowed navigators to take precise bearings on landmarks, celestial objects, or other ships—critical for accurate positioning before the advent of modern satellite navigation. This piece reflects the height of WWII and early Cold War-era maritime engineering, used aboard larger Navy vessels to aid in navigation and fire control plotting. Sperry Gyroscope was synonymous with precision during this era, and their equipment remains iconic among naval historians and collectors. The instrument retains: • Original builder’s plate with full technical markings • Polished flanged base for deck mounting • Functional bearing repeater dial marked in degrees and cardinal points • Vintage Navy inspection and test identification tag A rare and historically significant artifact, it serves not only as a collectible piece of naval history but also as a striking decorative statement for a maritime-inspired interior, office, or museum display.

Dimensions: 
Height: 56 in (142.24 cm)Diameter: 18 in (45.72 cm)
Style: 
Industrial
Materials and Techniques: 
Aluminum, Brass, Glass
Place of Origin: 
United States
Date of Manufacture: 
1930-1940
Condition: 
Wear consistent with age and use. surface scratches.
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