Cross-staffs used for surveying, 1551. In this case they are being used to measure the width of a river by triangulation. From Rudimenta Mathematica by Sebastian Munster. (Basel, 1551). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
Bildgröße: | 4804 px × 3633 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |