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.

• 

  Wall Black Numbers Clock Download HD
  Format: PNG
  Resolution: 1024x838
  Size: 241.6KB
  Downloads: 70
• 

  Wall Clock Green Classic Free Transparent Image HQ
  Format: PNG
  Resolution: 852x851
  Size: 30.7KB
  Downloads: 98
• 

  Alarm Clock Clipart
  Format: PNG
  Resolution: 1024x1201
  Size: 798.5KB
  Downloads: 299
• 

  Stopwatch Png Image
  Format: PNG
  Resolution: 1496x1869
  Size: 443.8KB
  Downloads: 1,093
• 

  Clock Png Image
  Format: PNG
  Resolution: 2143x2393
  Size: 2.0MB
  Downloads: 595
• 

  Clock Png Image
  Format: PNG
  Resolution: 1163x1156
  Size: 321.2KB
  Downloads: 349
• 

  Clock Png Image
  Format: PNG
  Resolution: 1896x1836
  Size: 1.4MB
  Downloads: 360
• 

  Alarm Clock Png Image
  Format: PNG
  Resolution: 2400x2229
  Size: 341.8KB
  Downloads: 429
• 

  Clock Png Image
  Format: PNG
  Resolution: 3503x2413
  Size: 2.9MB
  Downloads: 388
• 

  Clock Png Image
  Format: PNG
  Resolution: 889x889
  Size: 229.0KB
  Downloads: 387
• 

  Clock Png Image
  Format: PNG
  Resolution: 1762x1782
  Size: 1.6MB
  Downloads: 328
• 

  Clock Png Image
  Format: PNG
  Resolution: 598x598
  Size: 164.7KB
  Downloads: 405
• 

  Clock Transparent
  Format: PNG
  Resolution: 451x451
  Size: 16.0KB
  Downloads: 432
• 

  Clock Png
  Format: PNG
  Resolution: 450x519
  Size: 193.6KB
  Downloads: 539
• 

  Clock Png Images
  Format: PNG
  Resolution: 400x400
  Size: 48.8KB
  Downloads: 336
• 

  Clock Hands File
  Format: PNG
  Resolution: 1000x1000
  Size: 58.1KB
  Downloads: 305
• 

  Clock Hands Image
  Format: PNG
  Resolution: 1000x1000
  Size: 74.6KB
  Downloads: 336
• 

  Digital Clock Clipart
  Format: PNG
  Resolution: 564x423
  Size: 131.2KB
  Downloads: 303
• 

  Vintage Clock
  Format: PNG
  Resolution: 600x525
  Size: 143.3KB
  Downloads: 454
• 

  Digital Clock File
  Format: PNG
  Resolution: 2400x905
  Size: 146.8KB
  Downloads: 342

RELATED CATEGORIES

Sale

Clock

Shirt

Fashion

Clock

Men Shoes

Adidas Shoes

Clock

Clock

Clock