Antique 1920s Interlox Master Slide Rule, Collectible Wood Rule

Antique 1920s Interlox Master Slide Rule, Collectible Wood Rule


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We have for sale an Antique 1920s Interlox Master Slide Rule
Amazing 72-inch wooden slide rule made by the Master Rule Manufacturing Company of New York. This is a wonderful rule which measures inside dimension on one side outside dimension on the other side, very clever. It has 12 sections all measuring 8 inches, there is a metal button on each section you push to unlock and slide out each section. Invented by Albert Dahl.
We show a picture of an advertisement from 1919 for this rule.

Circa, 1920s
Marked, Interlox Master Slide Rule
Measures, 72” long, 8” per section.
Condition, Good, please see all pictures.

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Sku# 4664

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RiverRat Antiques LLC

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Returns and exchange details

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RiverRat Antiques LLC