One vertical unit fully looped with yarn. There are 17 lines at every section of frame.  Search “欧米茄17钻怀表【精仿++微wxmpscp】” from The Making of Screenplay: Part 4

Search “欧米茄17钻怀表【精仿++微wxmpscp】”

One vertical unit fully looped with yarn. There are 17 lines at every section of frame.