F.250 Data Sheet MJS-p-0204

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Novotni, Weight Calculator, c.1935

Serial Number or Date Stamp:

Country: USA

Primary construction material: pl

Case included?: yes

General Description: Specialty linear weight slide rule

Length of 1 decade = 4 in, and overall scale length = 4 in. The largest physical dimension is 15 in.

Front Scales: thk [ wd len ] [ dens xsec ] wgt

Back Scales:

Notes: Novotni, but not marked as such; 13 inch o/a length; By-Products Steel Corporation; Commercial Trust Building, Philadelphia, Pa.

References: https://americanhistory.si.edu/collections/search/object/nmah_1346563

Date Acquired: 08/02/2021