REPAIR & TROUBLESHOOTING - ShutterSpeed Measurement Technics

Master of Arts thesis presented to Boston University in 1949, this comprehensive study examines shutter speed measurement techniques for photographic cameras. The document begins with an introduction to essential terminology definitions, then provides detailed historical coverage of various methods developed for testing camera shutter speeds, both past and contemporary. The work covers multiple testing approaches including the rotating camera method, Fuller's electronic chronometer, Kelley and Penther methods, and various oscillographic techniques. Particular emphasis is placed on focal plane shutter testing methods, with dedicated chapters addressing iconoscope applications, Hurd tests, and the stroboscopic method. The thesis presents a complete oscillographic shutter test with detailed description of equipment, test procedure, and calculation of shutter characteristics. It also includes innovative design of a simple electronic shutter speed meter, with construction instructions, circuit operation, and calibration procedures. An additional chapter explores an alternative electronic counter method. Actual test results and final conclusions complete this comprehensive documentation of shutter speed measurement techniques and practical testing methodologies.