A Clock is a device used to keep, measure and indicate time. Clocks are said to be one of the oldest inventions of the human being, meeting a dire need to measure intervals of time shorter than the natural units like the day or the lunar month or the period of the entire year. Devices working on various physical processes have been used over a very long time. Some of the predecessors of the modern clock were often based on the movement of nature and were also termed as clocks. The one which shows time by representing the shadow of the sun on a flat surface is called a sundial. In order to measure the duration time, instruments like hourglass have been used. There are also water clocks which are considered to be one of the oldest time measuring devices. The major advancement came into the manufacturing system of clocks after the invention of verge escapement, which made possible the production of the first mechanical clock in 1300s in Europe. It used to keep time with oscillating timekeepers like balance wheels.
In horology, traditionally the clocks which did not strike hourly with some sound were known to be a timepiece and the one which produce the strike sound was called a clock.

In this sub category you can download free PNG images: Clock Objects. In this category "Clock" we have 159 free PNG images with transparent background.

  • Alarm Clock Png Image PNG Image
    Alarm Clock Png Image
    Format: PNG
    Resolution: 2055x2966
    Size: 2.2MB
    Downloads: 618
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1163x1156
    Size: 321.2KB
    Downloads: 349
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1024x1024
    Size: 30.4KB
    Downloads: 346
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1050x1500
    Size: 274.8KB
    Downloads: 417
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1280x1024
    Size: 152.2KB
    Downloads: 353
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 1662x1673
    Size: 810.8KB
    Downloads: 568
  • Stopwatch In Hand Png Image PNG Image
    Stopwatch In Hand Png Image
    Format: PNG
    Resolution: 1969x1101
    Size: 562.0KB
    Downloads: 338
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1896x1836
    Size: 1.4MB
    Downloads: 360
  • Alarm Clock Png Image PNG Image
    Alarm Clock Png Image
    Format: PNG
    Resolution: 600x787
    Size: 175.8KB
    Downloads: 415
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 861x1462
    Size: 640.7KB
    Downloads: 642
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1832x1641
    Size: 1.5MB
    Downloads: 383
  • Alarm Clock Png Image PNG Image
    Alarm Clock Png Image
    Format: PNG
    Resolution: 1616x2223
    Size: 1.2MB
    Downloads: 450
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1915x1914
    Size: 528.7KB
    Downloads: 433
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 812x1591
    Size: 650.0KB
    Downloads: 458
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 440x440
    Size: 113.1KB
    Downloads: 337
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1940x2486
    Size: 2.2MB
    Downloads: 417
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 580x600
    Size: 91.3KB
    Downloads: 305
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1021x1024
    Size: 498.1KB
    Downloads: 317
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 1205x1526
    Size: 325.4KB
    Downloads: 510
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1200x800
    Size: 274.5KB
    Downloads: 433

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