Title
Hexadecimal AdderCatalog Number
X557.85Type
Physical objectDescription
Object consists of an adder and a stylus.. Dimesions are of adder.. Accession number written on verso of object.Date
1957Manufacturer
International Business Machines Corporation (IBM)Place Manufactured
U.S.Identifying Numbers
| Other number | 229-3168 |
| Other number | US Pat. No. 2797047 |
Dimensions
1/2 x 9 1/4 x 2 7/8 in.Category
Calculator/mechanicalCredit
Gift of Fred MacchioLot Number
X557.85
