Chart Plotting Board Mark-7 US Navy MIL-B-5046A PZL It indicated outside air temperature

It indicated outside air temperature from -45deg to +45deg C

It is in fine but 'experienced' condition for its age

published by the Technical Air Intelligence Center of the US Navy

and a recording base

This was stored in any aircraft of the US Army Air Force or US Navy that may fly over water

Chart Plotting Board Mark-7 US Navy MIL-B-5046A PZL It indicated outside air temperatureThis is an authentic US Navy pilot's Chart Plotting Knee Board Mark 7 (MIL B 5046A), likely 1950's to Vietnam War era. This is a pretty impressive kit. Likely designed for a jet aircraft (note fuel is measured in lbs), this 9. 5 x 7 x 1 inch device included the flight computer on the face with a rotating card for determining the critical factors impacting the planned flight. By depressing a button in the lower right corner, the top flips open to