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lead diameter mechanism composition variations production date origin |
2 mm pushbutton spring clutch all plastic except for clip and collet/lead tube none circa early 1970s Germany |
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| see also |
Bruning 83-403 drafting leadholder Staedtler Mars 773 drafting leadholder |
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lead type lead size available degrees/colors package quantity package composition production date origin |
graphite 2 mm unknown range 6 plastic box circa 1970s Germany |
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| see also | Staedtler Mars Lumograph Drawing Lead |
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| original content, images, layout and design © 2001 to 2010 Dennis B. Smith | more info... | ▲ top | ||
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