Hundreds of companies around the world were involved in the production of slide rules from the 18th to the 20th centuries. Click on one of the names below to see the objects in this collection that were associated with that firm.
| Acu-Rule | Felsenthal | Makeba |
| Adams, Bertram E. | Fowler & Co. | Multi Slide Instrument Corp. |
| Albree, G. Norman | Fuller | M. W. Kellogg Company |
| Alco | Georgia Iron Works | Negus, T. S. & J. D. |
| Alteneder & Sons, Theo. | Gilson | Neil A. Maclean Company |
| Aston, Thomas | Graphic Calculator Co. | Nestler |
| Bastian Brothers | Grindsted Products | Novotni |
| Bradburn & Son | Guedon | Ole Jorgensens Creative Workshop |
| Carbic Limited | Gurley, W. & L. E. | Ontario, Province of |
| Central Scientific Company | Hawthorn, Robert | Perrygraf |
| Charpentier | Hemmi | Pickett |
| Charvoz-Roos | IBM | Post |
| Commonwealth Plastics Corp. | Impact | Psychological Corporation |
| Computer Manufacturing Co. | Jeppesen & Co. | Remington Rand |
| Concise | John Howard Herrick Co. | Richardson, George |
| Controller | Jones, Solomon A. | Ricoh |
| Cooke, Laban | Kegelman Brothers | Scofield, E. M. |
| C-Thru | Keuffel & Esser | Scott, Walter T. |
| Daemen-Schmid, Heinrich | Kingson | Stanley Rule & Level Co. |
| Darling, Brown & Sharpe | Knox, Inc. | Stanley, W. F. |
| Datalizer | K2 Publishing Corp. | Sterling Plastics |
| Dennert & Pape | Lawrence Engineering Service | Tavernier-Gravet |
| Dietzgen, Eugene | Lewis & Briggs | Thomas, Frank J. |
| DIWA | Lovelace Foundation | Unique |
| ECOBRA | L. Lumley & Co. | Whitehead & Hoag
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| EDMUND Scientific Co. | Macbeth Daylighting | Wichmann Brothers
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| Faber, A.W. | Patent Models |
