False-colour scanning electron micrograph of the crown wheel of a Swiss-made,17-jewel INCABLOC watch. The crown wheel is part of the watch's winding mechanism. When the watch is wound,the winding pinion (the small gear wheel seen edge-on at bottom) rotates,meshing with the crown wheel. The rotation of the crown wheel causes the ratchet wheel at top left to turn,& this wheel is attached to the barrel which holds the mainspring of the watch. The mechanism is very clean; the tiny dust particles would not affect its function. The absence of screwdriver marks in the crown wheel's slot shows that the assembly has never been serviced. Magnification: x2 at 35mm size. Blue tint. Original is BW H100 172. Reference: MICROCOSMOS,figure 9.14,page 181 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Burgess, Dr. Jeremy |
Bildgröße: | 4852 px × 3873 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |