Hour glass. Antique cotton spindle converted into an hour glass timer. Time is measured by a specific amount of sand falling from the top chamber to the bottom | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Chillmaid, Martyn F. |
Bildgröße: | 3547 px × 4977 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |