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 5835-00-759-1109
NSN 5999-01-191-6253
NSN 5925-01-276-3749
NSN 5998-00-619-1663
NSN 6645-01-262-8493
NSN 6220-00-079-2943
NSN 5998-01-535-6790
NSN 5905-01-522-8352
NSN 6320-01-622-5493
NSN 6240-01-271-2222
NSN 5905-01-579-9545
NSN 5895-00-719-7759