K&E, 4158, 1961
Serial Number or Date Stamp:
|Country: USA||Primary construction material: pl||Case included?: yes|
General Description: Basic linear polyphase slide rule
Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.
Front Scales: K A [ B S CI T C ] D L
Notes: New K12 variant of Beginner’s rule; only made for 1 year
Date Acquired: 03/21/2022