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Stabilo 8900

Schwan Pencil Co., Nürnburg, Germany

lead diameter mechanism composition variations production date origin	2 to 3.15 mm pushbutton spring clutch plastic barrel, metal fittings none known 1980s Germany
see also	Schwan Stabilograph thin lead leadholder Schwan Stabilo 8000 woodcased drawing pencil

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Stabilo 8-9

Schwan Pencil Co., Nürnburg, Germany

lead diameter mechanism composition variations production date origin	2 mm hybrid pushbutton spring clutch / pushbutton incremental advance plastic barrel, metal fittings degree imprint on pushbutton: H, 2H, 4H, ? (1970s) Germany
special features	pushbutton advancing mechanism with exposed clutch jaws
see also	Stabilo 8800 series of colored leadholders Tru Point Automatic leadholder with similar mechanism

This leadholder has an ingenious mechanism that has the exposed, firm gripping jaws of a pushbutton spring clutch and the convenience of pushbutton incremental advance. Another leadholder with such a mechanism is the Tru Point Automatic. I'm not sure which came first, the Stabilo or the Tru Point.