C-Thru, PS-79, c.1970
Serial Number or Date Stamp:
|Country: USA||Primary construction material: pl||Case included?: no|
General Description: Specialty circular ratio/proportion slide rule
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
Notes: Proportional Scale, from the estate of Johnny Craig, noted comic book artist
Date Acquired: 06/11/2022