Dimensionsoverall: 8 in x 10 in
DescriptionB&W Image of an adding machine. Recto: "Samuel Morland Inventor 1660"
Image is from a book with label 'A' showing front of adder. The adder is a series of wheels that can be turned to add numbers and also
Shillings, Pence and Farthings.
CreditCourtesy of Gwen Bell