Title
Postcard - Thacher's Cylindrical Slide RuleCatalog Number
102672262Type
Still ImageDescription
Color postcard of theThacher Slide rule. Verso: "Thacher's Cylindrical Slide Rule Achieved the Equivalence of a Sixty Foot Slide Rule (1881) 50cPublisher
The Computer MuseumPlace of Publication
Boston, MA, USDimensions
overall: 4 in x 6 inCategory
PhotographCredit
Courtesy of Gwen BellLot Number
X7413.2015