Festus, 50, 1938
Serial Number or Date Stamp:
|Country: USA||Primary construction material: wd||Case included?: no|
General Description: Basic linear beginner/student polyphase slide rule
Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.
Front Scales: A [ B CI C ] D K
Notes: Festus Model 50; rough condition; magnifier cursor
Date Acquired: 09/10/2020