Artifact Details Title Monroe High Speed Adding Calculator Catalog Number XB90.79 Type Physical object Description Manufacturer's decal on the back reads "Monroe High Speed Adding Calculator". Printed on another label is "Monroe Calculating Machine Company, New York, USA, NO. 1, 100-135 VOLTS, 0-60 CYCLES A.C., 100-135 VOLTS D.C.". Date undated Manufacturer Monroe Calculating Machine Company Place Manufactured U.S. Identifying Numbers Model number High Speed Adding Calculator Dimensions 6 1/2 x 11 1/2 x 11 in. Category Calculator/electromechanical Collection Title Gwen Bell artifact and book collection Series Title Pre-computing artifacts Credit Gift of Gwen and Gordon Bell Lot Number XB90.79
