File:La Règle de Cras.jpg

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Français : La règle de Cras ou rapporteur Breton est une règle rapporteur utilisée depuis 1902 pour tracer des routes et des relèvements sur une carte de navigation (Marine nationale, Marine marchande, bateaux de plaisance).

Elle tient son nom de son inventeur, le contre-amiral Jean Cras qui l'a créée en 1902.

Photographie prise avec l'aimable autorisation du Musée du Vieux Tréport : http://www.musee-du-vieux-treport.fr/
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Author Gegeours

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current16:59, 30 June 2018Thumbnail for version as of 16:59, 30 June 20184,831 × 2,717 (5.89 MB)Gegeours (talk | contribs)User created page with UploadWizard

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