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Techmatic De-Lux

Alvin & Comapany Inc., Windsor, Connecticut, USA

lead diameter mechanism composition variations production date origin	2 mm pushbutton incremental advance clutch all metal none 1990s to present Italy
special features	lead degree indicator
see also	Alvin Tech-Matic T4

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Pro-Matic De-Lux

Alvin & Company Inc., Windsor, Connecticut, USA

lead diameter mechanism composition variations production date origin	2 mm pushbutton spring clutch all metal 1990s to present none Italy
special features	lead degree indicator
see also	Koh-I-Noor "Super Adapto" 5616