109. Testing Machinery, Equipment & Procedures, , 1933-1981

Summary: Documents CR's use of machinery to test products, operations of laboratory equipment, and procedures for testing products. Includes correspondence, pamphlets, notes, worksheets, magazine and newspaper clippings, photographs of machinery and testing, equipment manuals, memo's to CR's technical staff, photographs, instruction manuals and advertisements. Testing machinery subjects include tests in which conditions of weather are imitated, tensile tests, CR's hat testing device, compression tests, bending tests, torsion tests, shearing tests, folding tests, hardness tests, fatigue tests, impact tests, abrasion tests and other tests. Laboratory equipment instruction booklets concern measurement of geometrical & mechanical magnitudes, mechanics of fluids, sound optics, atomic physics, fire detection equipment, technological testing electrical measurement, electrical engineering, radio-television power supplies, office equipment, complex objects, photographic equipment.