Altimeter in Display Case, Aviation Section US Signal Corps, 15,000FT, WWI OH-6 Cayuse to Military-Extended

to Military-Extended

Reference Number 41-7952

The throttle grip contains the speed brake control switch

The indicator would have required the separate lamp module (Fl26682 & 27003

Altimeter in Display Case, Aviation Section US Signal Corps, 15,000FT, WWI OH-6 Cayuse to Military-ExtendedThis is an Altimeter used in military aircraft of the Aviation Section, US Signal Corps, which existed from 1914 1918 and was the WWI era precursor to today's US Air Force. This altimeter crudely measured altitude from 0 15,000 ft. By loosening the small retaining lever, gripping the knurled rim of the faceplate and turning, the numerical scale rotates clockwise or counter clockwise while the pointer remains stationary, to correct the altitude reading