F.62 Data Sheet MJS-p-0395

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Dietzgen, B-1725L, 1972

Serial Number or Date Stamp: US-3L

Country: USA

Primary construction material: bb

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: LL01 LL02 LL03 DF [ CF CIF L CI C ] D LL3 LL2 LL1

Back Scales: Th Sh2 Sh1 A [ B T1 T2 ST S ] D DI K

Notes: Bamboo Vector Type Log Log; leather case; made by Ricoh; shown only in 1972 Dietzgen catalog; owner J.E. Rossi

References: https://osgalleries.org/makers/reference/BabcockDietzgenMatrix.pdf

Date Acquired: 09/02/2025