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May 1983

Clinical Measurement Pen

Author Affiliations

University of Illinois College of Medicine at Peoria 1 Illini Dr PO Box 1649 Peoria, IL 61656

Arch Dermatol. 1983;119(5):364-365. doi:10.1001/archderm.1983.01650290004004

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To the Editor.—  Essential to any description of a skin lesion is an accurate measurement of its size. This usually necessitates carrying a small ruler as well as a pen for recording. My ire is roused not so much at having to carry the extra ruler as at having so frequently to turn it around to the metric edge. Inasmuch as an international search for a ruler scored exclusively in millimeters has failed, I haveClinical measurement pen. incorporated the ruler into a pen.To do this, I scored the surface of a white, adhesive-backed paper strip in centimeters per millimeter and applied it to the surface of my pen—or, more simply, I attached strips of the millimeter scale from photocopies of a plastic ruler (Figure). This has given me a valuable "pen pal" and has eliminated wear and tear on my pockets, as well as the frustration of seeing

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