Surveying, early 17th century. Method of using a quadrant fitted with a plumb line and marked with shadow scales to measure the depth of a well. From Utriusque cosmi. historia by Robert Fludd. (Oppenheim, 1617-1619). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Taille de l’image : | 3217 px × 5428 px |
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Property Release : | Non requis |
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