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Contact Privacy Inc. Customer 019684497
Contact Privacy Inc. Customer 019684497
96 Mowat Ave
Toronto, ON, M6K 3M1
CA
Selection of slide rules and antique mechanical calculators available for sale. Other information related to slide rule and calculator collecting. One thing I have observed while searching for slide rules, people will collect anything. If there is anything to collect, somebody will collect it. Free counters provided by Honesty. Are you interested in learning about slide rules or collecting? .
Last update 07 July 2013. I also run a climate site at www. And profile site at www.
For over 300 years, since its invention in 1620 by William Oughtred, the slide rule played an ever-increasingly important role in the development of commerce, taxation, weaponry, navigation, astronomy and engineering. Becoming extremely sophisticated, the slide rule penetrated all branches of technology and by the middle of the 20th Century millions of rules had been produced. And then by 1975 they were gone. Slide Rule Forum Archive Search.