| Click on the thumbnails below to see full-size images |
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| The
scales on the front are: K A [ B T S CI C ] D L. The C and D scales are 250 mm long. (full-size image: 184 kB) |
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| There are brief
instructions on how to use a slide rule on the back. (full-size image: 191 kB) |
| These are black and white photographs. The rule is made of aluminium with slightly off-white faces. |