Brown - figure 349

Beschreibung

Another form of parallel ruler. The arms are jointed in the middle and connected with an intermediate bar, by which means the ends of the ruler, as well as the sides, are kept parallel.

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507 mouvements mécaniques

Permanentlinks

DMG-Lib		https://www.dmg-lib.org/dmglib/handler?image=20001023
Europeana		http://www.europeana.eu/portal/record/2020801/dmglib_handler_image_20001023.html

Datenbereitsteller

IFMA		http://www.ifma.fr
BCU		http://bibliotheque.clermont-universite.fr

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Brown - figure 349