| Country of Origin | United States |
|---|
Check the listing for details. Johns-Manville Pocket Slide Ruler. Condition: Used, Made in United States. Listed at 25.00 USD. The Johns-Manville Pocket Slide Ruler is a vintage tool used for engineering and scientific calculations. This collectible item is compact and portable, making it convenient for professionals and enthusiasts to have on hand for quick calculations. With its durable construction and reliable functionality, the Pocket Slide Ruler is a practical and unique addition to any collection.
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