| Instruction Manuals The site has instruction manuals for a number of slide rules. These have been scanned and converted to HTML. Some of them relate to standard rules (Thornton, Faber Castell 2/83N) and would be useful whatever rule you have but others are for specialised rules. The manuals are English except as indicated below. To download the file in PDF format, right click on the word "Download" and choose "Save target as" if you are using Microsoft Explorer or choose "Save link as" if you are using Netscape Navigator. |
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| Description | Direct link | PDF format |
| Cajori's "The Slide Rule". A 1909 book on the history of slide rules. | There is no HTML version. The following
link will download a Word document version. Cajori |
Download |
| A fairly standard rule and useful as a guide for many other rules. | Thornton | Download |
| A typical circular rule. | Concise 28 | Download |
| This is a well known cylindrical rule. | Otis King | Download |
| A pocket-watch type of circular rule. | Fowler | Download |
| An all metal rule with two slides. | Omnes rule | |
| A specialised rule for sewer calculations. | EASYR hydraulic rule | |
| A later rule for pipes and channels. | Tarrant hydraulic rule | |
| An early manual by Pickworth dated by R Shepherd to 1900 but still useful today. | A. W. Faber's Calculating Rule | |
| A complex rules with 30 scales; there aren't many scales around that you don't find on this rule.... |  Faber
Castell 2/83N (and 62/83N) |
Download |
 Version
espagnol |
Download | |
| .... and few of those are on this rule. | Faber Castell / Chemie Verlag | |
| This was one of the early types of rule used for calculations related to alcoholic strength of spirits. | Proof rule | |
| An early forerunner of the slide rule | The Sector | |
| Instructions in French (instructions en français) |  Nestler |
Download |
| A French circular rule (en français) | Roplex |
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| A fairly basic rule (in German) |  Faber |
Download |
| A well specified German rule. Includes hyperbolic scales (in German) | Aristo |
Download |
| A beginner's rule (in German) | Rietz |
Download |