Torque Pressure Indicator US Gauge AW1842 OH-6 Cayuse Loach Helicopter Shackleton or Sacramento Air Material Area

or Sacramento Air Material Area at McClellan Air Base

this is not aviation in nature

This altimeter crudely measured altitude from 0-12

this pre-WWII instructional manual is for the Aircraft Instruments course of The Department of Mechanics in The Air Corps Technical School

Torque Pressure Indicator US Gauge AW1842 OH-6 Cayuse Loach Helicopter Shackleton or Sacramento Air Material AreaHere is an engine Torque Pressure Indicator, 0 112. 5 PSI, as appeared in the Vietnam War era light helicopter Hughes OH 6 Cayuse, aka Loach. (see photo of instrument panel, indicator is at upper center). Measures 2. 5 inches diameter by 2. 5 inches deep. .