PHOTOELECTRIC EXPOSURE METERS METHODS OF TESTING.
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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All Union Government Standards are listed which are applicable to photoelectric exposure meters. The standards establish methods for checking the calibration of exposure meters for illuminance and brightness determination of basic error in exposure meters checking the moving parts of exposure meters checking the opaqueness of the housings determination of temperature error determination of fatigue determination of coefficient and angles of perception determination of stability of exposure meters to mechanical influences determination of stability to climatic influences. Author