This site is intended to allow my slide rule collection to be viewed and commented on by other collectors and enthusiasts of slide rules. Feel free to browse the pages, view the collection and share in my little hobby. Have fun and enjoy the collection. And we can arrange for scans to be made available to the slide rule community. Errors, Corrections, etc.

The purpose of this website is to make available engineering. Out-of-Print Material that may be Useful when Working on Existing Facilities. Older, Usually Conservative Methods of Solving Technical Problems. Public Domain Documents that have Limited Availability. In Summary, Information on this Site is Difficult to Find Anywhere Else. Many of These Documents are Over 50 Years Old. They May Contain Outdated Information.

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? .