An hourglass or sandglass, sand timer, sand clock or egg timer is a machine used to measure the passage of time. It consists of two glass bulbs linked vertically with the aid of a slender neck that approves a regulated waft of a substance (historically sand) from the higher bulb to the decrease one. Typically the top and decrease bulbs are symmetric so that the hourglass will measure the equal length regardless of orientation.
The particular length of time a given hourglass measures is decided via elements which include the extent and coarseness of the particulate matter, the bulb dimension and the neck width. Depictions of an hourglass as a image of the passage of time are located in art, mainly on tombstones or different monuments, from antiquity to the current day. The shape of a winged hourglass has been used as a literal depiction of the popular Latin epitaph tempus fugit "time flies".

In this sub category you can download free PNG images: Hourglass Learning. In this category "Hourglass" we have 34 free PNG images with transparent background.

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  Photos Animated Hourglass HQ Image Free
  Format: PNG
  Resolution: 1440x1080
  Size: 496.0KB
  Downloads: 85
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  Animated Hourglass Free HD Image
  Format: PNG
  Resolution: 512x512
  Size: 15.4KB
  Downloads: 74
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  Of Fantasy Sands Time Table Hourglass
  Format: PNG
  Resolution: 360x720
  Size: 193.6KB
  Downloads: 238
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  Table Clock Shoe Time Hourglass Download HD PNG
  Format: PNG
  Resolution: 509x720
  Size: 211.9KB
  Downloads: 261
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  Hourglass Hd
  Format: PNG
  Resolution: 1440x1080
  Size: 495.8KB
  Downloads: 353
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  Hourglass Clipart
  Format: PNG
  Resolution: 3654x6758
  Size: 418.8KB
  Downloads: 391
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  Hourglass Transparent
  Format: PNG
  Resolution: 1580x2292
  Size: 431.1KB
  Downloads: 378
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  Hourglass Picture
  Format: PNG
  Resolution: 423x720
  Size: 321.8KB
  Downloads: 651
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  Hourglass Transparent Background
  Format: PNG
  Resolution: 401x703
  Size: 290.1KB
  Downloads: 523
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  Hourglass Image
  Format: PNG
  Resolution: 720x720
  Size: 70.6KB
  Downloads: 460
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  Hourglass
  Format: PNG
  Resolution: 400x500
  Size: 30.9KB
  Downloads: 463
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  Hourglass Free Download
  Format: PNG
  Resolution: 509x720
  Size: 211.9KB
  Downloads: 408
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  Hourglass Transparent Image
  Format: PNG
  Resolution: 414x455
  Size: 200.9KB
  Downloads: 566
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  Hourglass File
  Format: PNG
  Resolution: 1500x1500
  Size: 135.7KB
  Downloads: 346

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