Nadir point methods for planimetric air photographs
Negative carrier
Negative film masking system in photographic processing and...
New filmmaking technique
News projecting machine
Night vision clearance light
Non-cocking springless shutter developing two parameter...
Non-folding tripod adaptor for camera
Non-interfering color viewing system using spectral...
Non-seizing closed loop film transport system
Notebook size lcd projector
Null position exposure control device for a photographic camera