Artifact Details Title Lightning Portable Adding Machine Catalog Number X875.88 Type Physical object Description Pencil marks on verso. Word "Ken" is written in pencil on verso.. Object consists of a stand and an adding machine.. Dimesions are of machine on stand. Date ca. 1900 Manufacturer The Lightning Adding Machine Company Dimensions 1 3/4 x 14 1/4 x 4 1/4 in. Category Calculator/mechanical Lot Number X875.88