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 Hands Clipart PNG Image
    Clock Hands Clipart
    Format: PNG
    Resolution: 400x400
    Size: 43.6KB
    Downloads: 321
  • Clock No Hands Image PNG Image
    Clock No Hands Image
    Format: PNG
    Resolution: 449x524
    Size: 48.0KB
    Downloads: 347
  • Clock No Hands File PNG Image
    Clock No Hands File
    Format: PNG
    Resolution: 570x570
    Size: 48.6KB
    Downloads: 439
  • Digital Clock Transparent Image PNG Image
    Digital Clock Transparent Image
    Format: PNG
    Resolution: 600x289
    Size: 49.4KB
    Downloads: 304
  • Clock Hands File PNG Image
    Clock Hands File
    Format: PNG
    Resolution: 1000x1000
    Size: 58.1KB
    Downloads: 305
  • Clock Hands Transparent Image PNG Image
    Clock Hands Transparent Image
    Format: PNG
    Resolution: 600x600
    Size: 67.7KB
    Downloads: 372
  • Vintage Clock Clipart PNG Image
    Vintage Clock Clipart
    Format: PNG
    Resolution: 1372x1372
    Size: 71.8KB
    Downloads: 326
  • Clock Hands PNG Image
    Clock Hands
    Format: PNG
    Resolution: 550x550
    Size: 74.5KB
    Downloads: 413
  • Clock Hands Image PNG Image
    Clock Hands Image
    Format: PNG
    Resolution: 1000x1000
    Size: 74.6KB
    Downloads: 336
  • Digital Clock Clipart PNG Image
    Digital Clock Clipart
    Format: PNG
    Resolution: 564x423
    Size: 131.2KB
    Downloads: 303
  • Digital Clock Image PNG Image
    Digital Clock Image
    Format: PNG
    Resolution: 665x423
    Size: 135.4KB
    Downloads: 297
  • Vintage Clock PNG Image
    Vintage Clock
    Format: PNG
    Resolution: 600x525
    Size: 143.3KB
    Downloads: 454
  • Digital Clock File PNG Image
    Digital Clock File
    Format: PNG
    Resolution: 2400x905
    Size: 146.8KB
    Downloads: 342
  • Alarm Clock PNG Image
    Alarm Clock
    Format: PNG
    Resolution: 555x785
    Size: 152.5KB
    Downloads: 337
  • Clock Hands Transparent PNG Image
    Clock Hands Transparent
    Format: PNG
    Resolution: 2244x2244
    Size: 248.9KB
    Downloads: 388
  • Vintage Clock File PNG Image
    Vintage Clock File
    Format: PNG
    Resolution: 400x398
    Size: 284.1KB
    Downloads: 403
  • Clock No Hands Clipart PNG Image
    Clock No Hands Clipart
    Format: PNG
    Resolution: 2700x2700
    Size: 302.2KB
    Downloads: 486
  • Vintage Clock Image PNG Image
    Vintage Clock Image
    Format: PNG
    Resolution: 1524x1270
    Size: 309.9KB
    Downloads: 401
  • Vintage Clock Transparent PNG Image
    Vintage Clock Transparent
    Format: PNG
    Resolution: 500x532
    Size: 408.8KB
    Downloads: 363
  • Vintage Clock PNG Image
    Vintage Clock
    Format: PNG
    Resolution: 600x600
    Size: 502.7KB
    Downloads: 308

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