| Time Period Manufactured | 1930-Now |
|---|---|
| Country/Region of Manufacture | United States |
Check the listing for details. 1973 Perrygraf Dow Corning Silicon Slide Rule with Authentic Perrygraf Case. Listed at 24.50 USD. This vintage slide rule from 1973 is a must-have for any collector of engineering memorabilia. Made by Perrygraf and Dow Corning, it is a true piece of history. The slide rule is in excellent shape and comes with an authentic Perrygraf case. It was manufactured in the United States and is an excellent addition to any science or medicine collection. The time period of manufacture is from 1930 to now, making it a rare find. This slide rule is perfect for anyone who loves engineering or wants a piece of vintage technology.
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