F.80 Data Sheet MJS-p-0250

Felsenthal, Dial-A-Con, 1968

Serial Number or Date Stamp:

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

General Description: Specialty circular slide rule

Length of 1 decade = 9 in, and overall scale length = 9 in. The largest physical dimension is 7 in.

Front Scales: mi [ min hr ] Dens Temp/Press

Back Scales: true [ wind ]

Notes: Flight computer, Type E6B, with instruction manual (by A. Fuchs), and vinyl case

References: https://www.madeinchicagomuseum.com/single-post/g-felsenthal/

Date Acquired: 03/17/2022