F.276 Data Sheet MJS-p-0393

Okonite, Electric Wire Computer, 1920

Serial Number or Date Stamp:

Country: USA Primary construction material: pp Case included?: yes

General Description: Specialty circular electro slide rule

Length of 1 decade = 2 in, and overall scale length = 14 in. The largest physical dimension is 6 in.

Front Scales: gauge cmils _ Amps [ Length _ Volts ]

Back Scales:

Notes: William Cox computer, copyright 1892, rights transfered to Okonite; located on back inside cover of Okonite Insulated Wire and Cable Handbook (1920)

References: https://archive.org/details/sim_factory_1892-08-13_20_25/page/n9/mode/2up, https://babel.hathitrust.org/cgi/pt?id=chi.65458731&seq=1

Date Acquired: 08/01/2025