Clock (timepiece)...
From Wikipedia, the free encyclopedia

A clock is an instrument used to indicate, keep, and co-ordinate time. The word clock is derived ultimately (via Dutch, Northern French, and Medieval Latin) from the Celtic words clagan and clocca meaning "bell". A silent instrument missing such a mechanism has traditionally been known as a timepiece.

Watch, Clock, and Part Manufacturing Sector ...
Found on 1800miti.Com, the Commerce Resource dB

This Industry comprises establishments primarily engaged in manufacturing and/or assembling of clocks; watches; timing mechanisms for clockwork operated devices; time clocks; time and date recording devices; and clock and watch parts, such as springs, jewels, and modules.