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.

  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1399x1398
    Size: 976.3KB
    Downloads: 403
  • Wall Green Office Clock PNG Free Photo PNG Image
    Wall Green Office Clock PNG Free Photo
    Format: PNG
    Resolution: 500x500
    Size: 83.3KB
    Downloads: 58
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 800x1000
    Size: 230.5KB
    Downloads: 839
  • Wall Clock Png Image PNG Image
    Wall Clock Png Image
    Format: PNG
    Resolution: 1775x1780
    Size: 1.1MB
    Downloads: 1,257
  • Wall Circle Green Clock Free Photo PNG Image
    Wall Circle Green Clock Free Photo
    Format: PNG
    Resolution: 640x480
    Size: 57.4KB
    Downloads: 70
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1204x1526
    Size: 443.8KB
    Downloads: 449
  • Wall Black Clock PNG Image High Quality PNG Image
    Wall Black Clock PNG Image High Quality
    Format: PNG
    Resolution: 1280x1280
    Size: 406.2KB
    Downloads: 91
  • Alarm Clock PNG Image
    Alarm Clock
    Format: PNG
    Resolution: 555x785
    Size: 152.5KB
    Downloads: 337
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 1000x1000
    Size: 282.7KB
    Downloads: 673
  • Wall Photos Green Clock Download HD PNG Image
    Wall Photos Green Clock Download HD
    Format: PNG
    Resolution: 1023x1028
    Size: 1.6MB
    Downloads: 62
  • Clock Hands PNG Image
    Clock Hands
    Format: PNG
    Resolution: 550x550
    Size: 74.5KB
    Downloads: 413
  • Vintage Clock Image PNG Image
    Vintage Clock Image
    Format: PNG
    Resolution: 1524x1270
    Size: 309.9KB
    Downloads: 401
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 900x906
    Size: 407.3KB
    Downloads: 437
  • Vintage Clock Transparent PNG Image
    Vintage Clock Transparent
    Format: PNG
    Resolution: 500x532
    Size: 408.8KB
    Downloads: 363
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1119x2628
    Size: 729.9KB
    Downloads: 387
  • Point House Astrology Angle Horoscope Download Free Image PNG Image
    Point House Astrology Angle Horoscope Download Free Image
    Format: PNG
    Resolution: 589x595
    Size: 64.9KB
    Downloads: 188
  • 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: 1000x1000
    Size: 456.2KB
    Downloads: 338
  • Clock Png Clipart PNG Image
    Clock Png Clipart
    Format: PNG
    Resolution: 434x434
    Size: 7.3KB
    Downloads: 836
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1563x1540
    Size: 878.5KB
    Downloads: 437

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