Welcome to
THE SLIDE RULE TRADING CO., Paul Ross

 

The Slide Rule Trading Company specializes in slide rule replacement parts.  We also buy and sell new and used slide rules and almost everything that is of interest to slide rule collectors.

Prices are up to date but availability changes from week to week.
 

Repair Parts
The Slide Rule Trading Co. has the most extensive selection of slide rule repair parts available on the Internet. Click to see
Hemmi and Post Parts
Keuffel and Esser Parts
Relay / Ricoh Parts
Slide Rules for Sale

Click here to see our selection of new and used slide rules for sale.

How to Order

For ordering and shipping information, click here.

Books, Literature, Ephemera 

Slide rule instructions, reference books, literature, advertising. 

Cases and Boxes

Looking for a case for that old slide rule?  We have a few new and lots of used cases (and even a few original shelf boxes) for sale.  Click here.

Reference Material

Listings of every slide rule that Hemmi and Post ever made.
Hemmi Slide Rule Catalogue Raisonne:
Hemmi slide rules with model numbers back to 1912.
Hemmi Catalog II:
Hemmi slide rules which don't seem to have model numbers. 

Frederick Post Slide Rule Cross Reference:
Frederick Post Slide rules back to 1903.

 Miscellaneous Information

Nothing for sale--just information like How to Manage a Slide Rule Collection and How to Repair a Slide Rule plus links to Web sites we have found useful or interesting. Click here.
How to Order  |  Home  | Slide Rules  |   Hemmi & Post Parts  |   K & E Parts  |  R/R Parts  |  Books & Literature  |  Cases & Boxes  |   Msc Info
  Hemmi Catalogue Raisonne  |    Hemmi Cat II   |    Frederick Post Cross Reference

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