Altimeter, Tycos Type C, 25,000FT, WWI Aviation Section Signal Corps US Army Whitley and the droppable auxiliary tank

and the droppable auxiliary tank (in bomb bay

It is in experienced yet good condition for its age

and trainers AT-6 Texan

as used in aircraft of the German Luftwaffe

Altimeter, Tycos Type C, 25,000FT, WWI Aviation Section Signal Corps US Army Whitley and the droppable auxiliary tankHere is a Type C Altimeter used in early military aircraft of the US Army Air Service during WWI. It is labeled as having been manufactured for the Aviation Section Signal Corps US Army, which was active from 1914 to 1918. Crudely measured altitude from 0 25,000 ft, which was pretty high for aircraft of that era and requiring supplemental oxygen for the crew to exceed ~12,500 ft based upon modern standards. The purpose of the knob was to rotate the