Скачать или смотреть Dotted line tool !

Discover the fascinating history behind one of the most expensive and precise tools in engineering history: the vintage German dotting pen. Legend has it that this mechanical marvel was developed during the Hitler era to ensure absolute perfection in technical drawings, as a single imperfect line could cost an engineer their life. Worth more than an average engineer's yearly salary at the time, this "railroad pen" used intricate gears to create flawless dotted lines that human hands couldn't match.

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