Rate of Climb / Vertical Air Speed Indicator US Navy Lockheed P-3 Orion P-2 Neptune as used in the US

as used in the US Army Air Corps tricycle-landing gear (wings & nose gear

as appeared in dual engine aircraft such as the US Air Force attack bomber Douglas A-26 / B-26 Invader during the 1950-70's

I is a straightforward gyro-magnetic compass using magnets for deviation correction of the detector unit (usually located in the tail or wingtip)

Alternative markings have been added by hand in red on the exterior glass

Flange diameter

Rate of Climb / Vertical Air Speed Indicator US Navy Lockheed P-3 Orion P-2 Neptune as used in the USThis offer is for a Rate of Climb Vertical Speed Indicator, Kollsman A26877 10 001, as used in the US Navy's P 3 Orion Antisubmarine Aircraft according to US Navy documentation on file. Measures 2in diameter and ~5. 5in deep. It is in nice condition given its age. The dial markings are clear and the glass and case are intact.