Ruler Advertising Berco Razor Blades

This wooden ruler is divided to 1/16" and numbered by ones from 1 to 14. Below the scale is a summary of Minnesota fish laws for 1940, listing the number of fish that could be caught in a day and held in one's possession for 20 different species. The seasons for catching different fish are also provided. A hole at the right end of the rule allows it to hang from a hook.
The back of the rule is marked: For Better, Faster Shaving – (/) USE BERCO BLADES. It is also marked: BERCO (/) DOUBLE EDGE and SINGLE EDGE (/) BLADES. It is also marked: Fit Your Face For The Outdoor – (/) USE BERCO BLADES. Berco distributed electric shavers and razor blades from Toledo, Ohio.
Reference: "Razors, Blades, Sharpening," Popular Mechanics 103, no. 4 (April 1955): 69.
Currently not on view
Object Name
scale rule
date made
Physical Description
wood (overall material)
overall: .4 cm x 38 cm x 2.8 cm; 5/32 in x 14 31/32 in x 1 3/32 in
ID Number
nonaccession number
catalog number
Science & Mathematics
Rule, Measuring
Promotional Item
Scale Rules
See more items in
Medicine and Science: Mathematics
Scale Rules
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Patricia Gossel
Additional Media

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