4. Optics: measuring and testing
  5. For light transmission or absorption
  6. Of photographic film
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Spot microdensitometer for spectral density analysis of film

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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Step tablet

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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System for measuring the optical density of both the background

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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System for recording information on photographic image density a

Optics: measuring and testing – For light transmission or absorption – Of photographic film
Patent

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