| Click on the thumbnail below to see a larger image (190 kB). |
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| The
scales on the front are: K A [ B CI C ] D L. The C and D scales are 125 mm long. |
| This is a black and white photograph. The rule is made of white plastic. The back is completely blank. This model also exists in yellow, and some examples omit the word MEXICO from the left hand end of the slide. |