Preserving Warbird History...one artifact at a time.
Here is Radar Pressure Indicator use in radar-equipped aircraft during late WWII and post WWII.
A-6E Intruder TRAM and KA-6D Technical Manual Flight Control Systems 1991
Accelerometer, G-Meter, AN-5745, Type B-3 WWII B-17, B-24, B-25
Accelerometer, G-Meter, AN-5745L3, F4U-5N Corsair