Artifact Details Title Weston D.C. Voltmeter Catalog Number X125.82 Type Physical object Description Originally owned by Harvard University. Last calibrated in 1931. Missing 2 feet. Mounted on interior of lid is a paper tag showing voltmeter parameters and certification date. Dimensions are with the lid closed. Date 1931 Manufacturer Weston Electrical Instrument Corporation Place Manufactured Newark, N.J., U.S. Identifying Numbers Model number 45 Other number F 552-1M-4-31 upper left corner of interior tag Other number Nov. 6, 1888 Patent date Serial number 40153 Dimensions 10 1/2 x 8 x 4 1/2 in. Category Test Equipment Credit Gift of Carl Klempner Lot Number X125.82