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lead diameter(s) mechanism composition variations production date origin |
0.3, 0.5, 0.7, 0.9 mm pushbutton incremental advance, 5 mm fixed sleeve plastic barrel, metal fittings none circa 2000 Japan |
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| special features |
lead degree indicator twist advance eraser |
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| original content, images, layout and design © 2001 to 2010 Dennis B. Smith | more info... | ▲ top | ||
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