Artifact Details Title Great instruments of math & science Catalog Number 102703867 Type Document Description Poster glued to board frame. Features a photograph of artifacts, including an abacus, sundial, astrolabe, sextant, napier's bones, slide rule, fuller spiral slide rule, and calculator. Some of the pictured items are courtesy of The Computer Museum. Publisher Texas Instruments Dimensions 24 x 35 1/2 in. Category Poster