The Sheaffer Touchdown Mechanism: A Design Analysis

Описание к видео The Sheaffer Touchdown Mechanism: A Design Analysis

For some decades Sheaffer experimented with mechanical complexity in fountain pen engineering; the Touchdown filling mechanism was a relatively straight-forward complication, used in many pens.

On the technical aspects of fountain pens:
   • Fountain Pens: The Technical Aspects  

Комментарии

Информация по комментариям в разработке

Похожие видео