F.213 Data Sheet MJS-p-0310

K&E, Mystery2, 1929

Serial Number or Date Stamp: 291505

Country: USA Primary construction material: wd 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: in /| A [ B CI C ] D K || cm

Back Scales: [ S L T ]

Notes: no model number, no patent info; no logo; same scale set as 4053-3; nice condition; all-glass cursor; Coll. Eng. Washington; owner Frank. A. Morey

References: http://www.mccoys-kecatalogs.com/KECollection/Mystery/kemysteryfamilyrules.htm

Date Acquired: 07/10/2023