Pressure Gauge, 2000PSI, PN 12882-A, AN5771-4, similar to use in B-17, B-24 Pre-WW2 font-family:"Times New Roman"

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to align the line of firing with the line of the gunsight

as used in early aircraft of the US Army Air Corps

The gunner took aim at his target by looking through the glass screen mounted on an optic head the bottom of the sight

This is a fine example of an early WWII-era German Wendezeiger (Turn and Bank) Fl 22402

Pressure Gauge, 2000PSI, PN 12882-A, AN5771-4, similar to use in B-17, B-24 Pre-WW2 font-family:"Times New Roman"Here is an aircraft Pressure Gauge, 0 2000PSI, made by Electric Auto Lite. Measures 2. 25in diameter and ~2in deep. According to the Maintenance Interchangeability gude dated Feb 1945, the AN5771 4 Pressure Gauge was used across many multi engine aircraft of the US Army Air Forces, including bombers B 17 Flying Fortress, B 24 Liberator, B 29 Superfortress, B 25 Mitchell, B 26 Marauder, and A 20 Havoc. It closely resembles the model used in these