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.

  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 1662x1673
    Size: 810.8KB
    Downloads: 568
  • Clock Png PNG Image
    Clock Png
    Format: PNG
    Resolution: 450x519
    Size: 193.6KB
    Downloads: 539
  • Stopwatch In Hand Png Image PNG Image
    Stopwatch In Hand Png Image
    Format: PNG
    Resolution: 1991x1912
    Size: 1.2MB
    Downloads: 525
  • Stopwatch In Hand Png Image PNG Image
    Stopwatch In Hand Png Image
    Format: PNG
    Resolution: 1636x3194
    Size: 2.0MB
    Downloads: 518
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 1205x1526
    Size: 325.4KB
    Downloads: 510
  • Wall Clock Png Image PNG Image
    Wall Clock Png Image
    Format: PNG
    Resolution: 427x700
    Size: 155.6KB
    Downloads: 507
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 1331x1511
    Size: 66.5KB
    Downloads: 489
  • Clock No Hands Clipart PNG Image
    Clock No Hands Clipart
    Format: PNG
    Resolution: 2700x2700
    Size: 302.2KB
    Downloads: 486
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 2842x2688
    Size: 2.2MB
    Downloads: 481
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 643x1070
    Size: 279.2KB
    Downloads: 463
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 800x1154
    Size: 184.7KB
    Downloads: 461
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 812x1591
    Size: 650.0KB
    Downloads: 458
  • Vintage Clock PNG Image
    Vintage Clock
    Format: PNG
    Resolution: 600x525
    Size: 143.3KB
    Downloads: 454
  • Wristwatch Png Image PNG Image
    Wristwatch Png Image
    Format: PNG
    Resolution: 2008x3034
    Size: 2.3MB
    Downloads: 450
  • 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: 1204x1526
    Size: 443.8KB
    Downloads: 449
  • Clock Picture PNG Image
    Clock Picture
    Format: PNG
    Resolution: 900x900
    Size: 386.9KB
    Downloads: 447
  • Red Wall Clock Png Image PNG Image
    Red Wall Clock Png Image
    Format: PNG
    Resolution: 512x512
    Size: 58.6KB
    Downloads: 442
  • Clock No Hands File PNG Image
    Clock No Hands File
    Format: PNG
    Resolution: 570x570
    Size: 48.6KB
    Downloads: 439
  • Clock Png Image PNG Image
    Clock Png Image
    Format: PNG
    Resolution: 900x906
    Size: 407.3KB
    Downloads: 437

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