This device - roughly cube-shaped with four inches to a side - was in use, as I recall, when I first started working as a student engineer at MRC in 1956. There is an SUI Serial number on the bottom/base of the unit, #119,431, and was built by THE STANDARD ELECTRIC TIME CO., in Springfield, Mass. USA (per the nomenclature on the metal tag riveted to the bottom of the plastic case). I believe this timer was used by Lindquist, and possibly others, to conduct T&M (Time & Motion) studies on various aspects of clerical and/or hand-scoring of tests, or perhaps to measure other important timing functions in the 'early days'. I am happy to include this MRC relic in my Accession Set #3. The Archival DVD Disc Folder: 1950s_SUI Electro-Mechanical Timer contains three JPEG-Image/photos of the timer