Establishments primarily engaged in manufacturing clocks (including electric), watches, watchcases, mechanisms for clockwork operated devices, and clock and watch parts. This industry includes establishments primarily engaged in assembling clocks and watches from purchased movements and cases. Establishments primarily engaged in manufacturing timeclocks are classified in Industry 3579; those manufacturing glass crystals are classified in Industry 3231; and those manufacturing plastics crystals are classified in Industry 3089.

• Appliance timers
• Chronographs, spring wound
• Chronometers, spring wound
• Clock materials and parts, except crystals and jewels
• Clocks, assembling of
• Clocks, except timeclocks
• Mechanisms for clockwork operated devices
• Movements, watch or clock
• Timers for industrial use, clockwork mechanism only
• Watchcases
• Watches and parts: except crystals and jewels