Vintage 1950's Sans & Strieffe No. 311 slide rule, made of bamboo. Sans & Streiffe are believed to have been based near Chicago, Illinois and were suppliers of "instruments" such as slide rules, drawing equipment, telescopes, binoculars, etc. No trace of the company appears after some time in the 1960s and they appear to have closed down around that time.
Making this a very rare item! The item "Vintage 1950's Sans Strieffe No. 311 Slide Rule GREAT SHAPE Math Office Display" is in sale since Wednesday, June 23, 2021. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "sharksintophats5" and is located in Pueblo, Colorado.This item can be shipped worldwide.