Altimeter, Air Section US Signal Corps, 15,000FT, WWI B-52 Includes the original carton and

Includes the original carton and label

the difference between the totals is the difference in density of the two fuel types

Observers worked within the structure of the Ground Observer Corps to ensure proper training and communication

25" square mount and 4" deep

Altimeter, Air Section US Signal Corps, 15,000FT, WWI B-52 Includes the original carton andThis 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. Made by Taylor Instruments, item # 2081 A. 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