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). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 3217 px × 5428 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |