SOLD! 1965 Acu Math No 4 Slide Rule

  • $17.99
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Here is an Acu Math No 4 Slide Rule from 1965. Made in USA.

Front Scale
K, A [ B, CI, C ] D, L

Acu-Rule, Acu-Math, (and later Sterling Plastics) slide rules were made originally by Festus Mfg. Co., Festus, Missouri, in 1938 by Paul Jones. The Festus Mfg. Co. and the Acu-Rule Mfg. Co. filled an important need during the Depression years of 1938 to 1940 and during WWII as a supplier of a low cost, student grade, wood slide rule as well as providing production capacity for other brand names, such as Dietzgen and Frederick Post. In 1939 the company was renamed Acu-Rule Mfg. Co., producing slide rules branded as Acu-rule and Acumath.

This slide rule shows light ware, there is a crack in the plastic end casing, please see picture, still in usable condition.

Although we try to give an accurate description, remember, this is a vintage item and there may be small imperfections from age or flaws from production that we have not noticed or noted in the comments. We try to list all the deficiencies, marks etc. Please review ALL pictures closely.

If you are purchasing multiple items from our shop, we are happy to combine shipping and refund the difference.

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