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Additional slide rule material can be accessed using the links in the left bar under "Slide Rule Content Pages".
Click on model number to go to model page with detailed descriptions, comparisons and photo gallery of all examples of a model, or click description to jump down to model within context by type and scale length on this page.
After this came the Second World War and a rationalisation their range.
Scales on the slide correspond to B, CI, and C scales. The brown leather case is marked: FABER- (/) CASTELL (/) 67/87 (/) Made in Germany.
The scales on the back of the slide are labeled sin, sin/tg, and tg. Faber-Castell of southern Germany introduced the 67 series of slide rules in 1952 and sold them through about 1976, although the form of logo on this example was only in use from 1952 to 1956.
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A copy of the license is included in the section entitled GNU Free Documentation License.