Altimeter, Air Section US Signal Corps, 15,000FT, WWI B-52 Handwritten overhaul markings are on

Handwritten overhaul markings are on the back

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

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

the board is strapped to the pilots left leg with the map inserted between the plastic panel and the aluminum frame

Here is an aerial refueling nozzle

Altimeter, Air Section US Signal Corps, 15,000FT, WWI B-52 Handwritten overhaul markings are onThis 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