Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Linear
K & E / 9081-3 Log-Log Duplex Decitrig
Keuffel & Esser
USA
Plastic
1949-1952
25 cm
Engineering

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."


Image 1




Image 2




Image 3




Image 4




Image 5