Negative, chrome, glass substrate, 50 by 50 by 1.5 mm
A sheet of plastic or similar material having inscribed upon its surface a perspective type grid for the purpose of determining scale on oblique photographs. Essentially it is a plot of ratio fractions, (rf's) against lineal measurements. Used in photo interpretation procedures.
Classification: Drawing, marking-out or mathematical calculating instruments, nesoi
NSN 6220-01-446-6430
NSN 5915-00-553-8755
NSN 5960-00-032-9715
NSN 6135-01-260-1100
NSN 6110-01-182-8256
NSN 5835-01-515-6537
NSN 5915-00-525-5753
NSN 5915-00-597-0038
NSN 5975-01-193-6739
NSN 5975-01-254-9244
NSN 6320-01-322-8340
NSN 5985-01-501-5411