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| courtesy Andrey Gordenco collection | |
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lead diameter mechanism composition variations production date origin |
2 mm pushbutton spring clutch all metal unknown unknown (pre-1970s) Japan |
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| reverse imprint: “Tombow Pencil Company Limited” |
gift from isu of The Uncomfortable Chair
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lead diameter mechanism composition variations production date origin |
2 mm pushbutton spring clutch plastic barrel, metal fittings none 1970s Japan |
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lead diameter mechanism composition variations production date origin |
0.3 mm (0.5, 0.7) pushbutton incremental advance all metal none (1980s) Japan |
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| special features | lead degree indicator | ||
| see also | Uchida Sharp Drawing thin lead drafting pencil |
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lead diameter mechanism composition variations production date origin |
0.3, (0.4), 0.5, 0.7, 0.9 pushbutton incremental advance clutch plastic barrel, metal grip and mechanism none (circa 1990) Japan |
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| special features | lead degree indicator in pushbutton | ||
| see also | Tombow Monotech thin lead drafting pencil (dial type) |
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lead diameter mechanism composition variations production date origin |
2 mm pushbutton spring clutch plastic barrel and indicator wheel, metal grip and mechanism none known (dial color?) grip color: black, silver 1990 USA |
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| special features | unique lead degree indicating wheel | ||
| see also | US Design Patent 324,069 "Lead Holder," 1990 |
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| ◄ | Thin Lead Drafting Leadholder Gallery Index |  http://leadholder.com/lh-draft-tombow.html#monotech-dial |
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available lead diameters mechanism composition variations production date origin |
0.3, 0.5, 0.7, 0.9 pushbutton incremental advance clutch plastic barrel and indicator wheel, metal grip and mechanism accent tone: black, silver circa 1990 Japan |
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| special features | unique lead degree indicating wheel | ||
| see also |
US Design Patent 324,069 "Lead Holder," 1990 Tombow Monotech thin lead drafting leadholder (without dial) |
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| original content, images, layout and design © 2001 to 2010 Dennis B. Smith | more info... | ▲ top | ||
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