| Country of Origin | United States |
|---|---|
| California Prop 65 Warning | NA |
Check the listing for details. Vintage Mannheim Professional Acu-Math No.511 Slide Rule W/ Case L3A. Condition: Used, Made in United States. Listed at 9.99 USD. Vintage ACU-MATH slide rule, No. 511, Mannheim “Student” model, made in the USA. A classic mid-century calculating tool used for engineering, mathematics, and technical work prior to electronic calculators. Includes original case and sliding cursor. The slide rule itself is in good vintage condition with clean, legible scales and smooth movement. The cursor is intact and functional. The case shows heavier age and wear, including staining, edge wear, and some splitting/tearing as shown.
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