F.20 Data Sheet 20

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C-Thru, PS-79, c.1970

Serial Number or Date Stamp:

Country: USA

Primary construction material: pl

Case included?: no

Length of 1 decade = 16 in, and overall scale length = 16 in. The largest physical dimension is 6 in.

Front Scales: ReproSize [ OrigSize ] PercReduc NumReducs

Back Scales:

Notes: Proportional Scale, from the estate of Johnny Craig, noted comic book artist

References: https://americanhistory.si.edu/collections/search/object/nmah_1756887

Date Acquired: 06/11/2022