Sensitometer

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Sensitometer \Sen`si*tom"e*ter\, n. [See {Sensitive}; {-meter}.]
     (Photog.)
     An instrument or apparatus for comparing and grading the
     sensitiveness of plates, films, etc., as a screen divided
     into squares of different shades or colors, from which a
     picture is made on the plate to be tested.


     [Webster 1913 Suppl.]

From WordNet (r) 2.0 [wn]:

  sensitometer
       n : a measuring instrument for measuring the light sensitivity
           of film over a range of exposures