Artifact Details Title Thomlinson's Equivalent Paper Slide Scale Catalog Number XB107.80 Type Physical object Description This slide scale converts various units of measure from English to metric. Thomlinson's Equivalent Paper Slide Scale is single sided with two slides. The lower left corner has been chipped. Date 1940 Manufacturer J. Thomlinson, Ltd. Place Manufactured U.K. Dimensions 3/4 x 23 x 3 1/4 in. Category Pre-computer/slide rule Collection Title Gwen Bell artifact and book collection Series Title Pre-computing artifacts Credit Gift of Gwen and C. Gordon Bell Lot Number X6288.2012