Title
Madas CalculatorCatalog Number
102627157Type
Still ImageDescription
Black and white image of a MADAS Calculator. A long rectangular box with across the top a series of round windows with numbers showing.To the right are 8 rectangular holes each with 10 noptches and a push slide, There are slides for addition, multiplication, subtraction and division.
Printed on box: MADAS Pat Jahnz U.S.A. P# DEC. 16th, 1913 D.R.P. etc.
Identifying Numbers
| Other number | #518 | Verso pencil |
Dimensions
overall: 4 in x 5 inCategory
PhotographCredit
Courtesy of Gwen BellLot Number
X7413.2015