Artifact Details Title Morris's Measuring Instrument Catalog Number XB128.80 Type Physical object Description I circular instrument with sliding wheel protruding from bottom under the shielding of a small arrow. Probable use: measuring map distances. Stores in a small, velvet-lined, wooden box. Date undated Manufacturer Morris, John Dimensions 1/2 x 2 x 2 1/4 in. Category Analog computer 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