Browse Items (15 total)

A white plastic protractor connected to a right angle square, allowing for dimension and angle drawing. The window below the protractor is has slightly non-parallel long edges that diverge at about 2-3˚. Design patent no. 93,979—meaning it was…

The data on this card was a mature version of the "MTM" or "Methods-Time Measurement" movement pioneered by Herold Bright Maynard, John Lenhard Schwab and Gustave James Stegemerten in the early twentieth century. These men built on the fundamental…

Physical Description      The scale’s frame is a rectangular prism composed of a russet-colored wood, with some sun bleaching occurring to its front face. Three tarnished metal feet, one on each front corner and one placed in the middle of the rear…

Physical Description: The Pickett 1000 slide rule is made of three rectangular bars of aluminum alloy coated in plastic with grooved slides.  Two bars are connected at the end with braces that are mounted to the flat side of the bars and the third…