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| ◄ | Thin Lead Drafting Leadholder Gallery Index |  http://leadholder.com/lh-thin-pentel-psd.html#psd5 |
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| retractable point | |
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lead diameter(s) mechanism composition variations production date origin |
0.5 mm pushbutton incremental advance clutch, 4 mm fixed sleeve, retractable point plastic barrel, metal mechanism, nosepiece, and grip grip color: black, silver circa 1980s Japan |
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| special features | lead degree indicator, retractable point | ||
| see also |
Pentel catalog, 1980, p 21 US patent 3,713,745 "Push-Type Mechanical Pencil" retractable Pilot |
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| ◄ | Thin Lead Drafting Leadholder Gallery Index | http://leadholder.com/lh-thin-pentel-psd.html#mechanica |
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| 0.3 mm model pictured | courtesy Pawel Bartuzi collection |
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lead diameter(s) mechanism composition variations production date origin |
0.3 and 0.5 mm pushbutton incremental advance clutch plastic barrel, metal grip and mechanics Japanese and export models 1968 to (1980s) Japan |
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| special features |
integrated retractable point protector, movable lead degree indicator |
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| see also | British patent 1,273,716 "Mechanical Pencil" |
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| original content, images, layout and design © 2001 to 2010 Dennis B. Smith | more info... | ▲ top | ||
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