For your consideration is this vintage 1979 Varco-Pruden Metal Building Systems slide rule, a must-have for any collector of industrial memorabilia. Made from sturdy card stock and held together with rivets, it features a Thermal Performance Selector and an Annual Energy Savings calculator on one side and an Annual Fuel Cost Savings and Climatic Map on the other. The slide rule was made in the United States by Varco-Pruden Metal Building Systems of Memphis, TN and weighs just 1.1 oz with dimensions of 8.5 in by 3.5 in. This collectible slide rule is perfect for anyone interested in engineering, science, and medicine from 1930 to now.
Condition: Good overall condition with no issues observed. 

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Antebellum Anne's strives to provide as accurate a description to the best of my abilities. Please be certain to view all photos as they are considered part of this item's description. I do typically ship within 24 hours of order placement. I recycle shipping supplies as often as possible thus allowing for additional savings for you, my customer. All items are stored and shipped from a smoke free but pet friendly home. If there is any odor detected, the listing will reflect that in the description.

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