Evaluation device for a photoelectric exposure meter

Claim 1

EVALUATION DEVICE FOR A PHOTOELECTRIC EXPOSURE METER USED TO DETERMINE THE APPROPRIATE EXPOSURE INFORMATION FOR PHOTOGRAPHIC MATERIALS OF VARYING SENSITIVITY, SAID DEVICE COMPRISING A DISC MEMBER HAVING AN EXPOSURE INNFORMATIONN SCALE THEREON, A MOVABLE REFERENCE POINTER MEMBER SUPERPOSED UPON SAID EXPOSURE INFORMATION SCALE AND BEING MOVABLE RELATIVELY THERETO IN ACCORDANCE WITH APPROPRIATE EXPOSURE INFORMATION FOR PHOTOGRAPHIC MATERIAL OF A CERTAIN SENSITIVITY, ADJUSTABLE MEANS OPERABLE TO SET UP THE MAXIMUM AND MINIMUM BRIGHTNESSES OF AN OBJECT TO BE PHOTOGRAPHED, MEAN BRIGHTNESS OF AN OBJECT TO BE PHOTOGRAPHED, MEAN BRIGHTNESS DETERMINING TO SAID DISC MEMBER TO MOVE THE SAME UNTIL SAID REFERENCE POINTER INDICATES A SPECIFIIC FIRST VALUE ON THE SCALE THEREOF, AND AT LEAST ONE AUUXILIARY RREFERENCE POINTER COOPERATING WITH SAID EXPOSURE INFORMATION SCALE INDEPENDENTLY OF SAID REFERENCE POINTER MEMBER TO INDICATE A SECOND VALUE ON SAID SCALE, SAID SECOND VALUE DEFINING THE CORRECT EXPOSURE INFORMATION FOR A PHOTOOGRAPHIC MATERIAL HAVING A SENSITIVITY DIFFERENT THAN SAID CERTAIN SENSITIVITY.