F.191 Data Sheet MJS-p-0268

K&E, 4093-3, 1930

Serial Number or Date Stamp: 322530

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

General Description: Advanced linear log-log vector/hyperbolic duplex slide rule

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

Front Scales: L LL0 DF [ CF B CI C ] D LL3 LL2

Back Scales: Sh1 Sh2 Th [ SI1 SI2 TI ] D S T

Notes: First year of the first Vector rule

References: JOS14.2p41 (2005)

Date Acquired: 07/28/2022