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Scientific Apparatus
Slide rule

Unidentified slide rule. Missing cursor. Manufacturer: Keuffel& Esser Co., New York. Patent date 6-5-1900. Similar but not identical to ST-CH-09 and ST-MU-18.

ID: 1998-00276

MEDIUM: Ivory and other; LENGTH: 10 5/8”; QUANTITY: 1

Topics: Mathematics

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