Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
K & E / 9081-3 Log-Log Duplex Decitrig
Keuffel & Esser
25 cm

Notes: "The K&E 9081-3 slide rule is an all-plastic version of K&Es flagship mahogany 4081-3 Log Log Duplex Decitrig slide rule. The 9081-3 model number was only used from 1949 until 1952 when it was replaced with the 4181-3 number. This one must have been made right at the end, when the 9081-3 number was being phased out, as the slide rule is still labeled N9081-3 while the box is labeled N4181-3 Old No. N9081-3. The 9081-3 feels more substantial than most other plastic slide rules, and is noticeably thicker."

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