Do you know the difference between clock and watches ?

- Jun 12, 2018-


              Do you know the different between clock and watches ?  

    Clocks and watches are usually distinguished by the size of the machine core, with the diameter of the machine core exceeding 50 mm and the thickness exceeding 12 mm. The machine core is 37-50mm in diameter and 4-6mm in thickness, which is called pocket watch. A watch is a watch whose core diameter is less than 37 mm.