| Country of Origin | United States |
|---|
Check the listing for details. Gilson Circular Midget Slide Rule 1931 1936 Calculator Disk 4 1/4" w/ Book!. Condition: Used, Made in United States. Listed at 11.00 USD. The Gilson Circular Midget Slide Rule from Copy. 1931 to 1936 is a compact and unique calculator disk measuring 4 1/4" in diameter, accompanied by a book for reference. Made in the United States, this slide rule is a valuable collectible for those interested in engineering and scientific tools from the past. With its circular design and historical significance, this product is a must-have for collectors of vintage mathematical instruments.
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