Artifact Details Title Summagraphics Bit Pad One Catalog Number 102743841 Type Physical object Manufacturer Summagraphics Identifying Numbers Serial number 54510 Dimensions overall: 2 in x 15 1/2 in x 15 1/2 in Category I/O/pointing/tablet Collection Title Chan H. Yeh collection of Ideographix materials Credit Gift of Chan Yeh Lot Number X6819.2013