F.140 Data Sheet 140

K&E, 4070-3, 1950

Serial Number or Date Stamp: 550030

Country: USA Primary construction material: wd Case included?: yes

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: DF [ CF CIF CI C ] D L

Back Scales: K A [ B T ST S ] D DI

Notes: Polyphase Duplex Trig

References: https://www.mccoys-kecatalogs.com/KEModels/ke4071family.htm

Date Acquired: 08/12/2021