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What is the name of the device used to count the number of anything (e.g. the number of people that enter a store)?

I'm thinking of a.. thing.. that fits in the palm of your hand and it has just one button, so that when you click it the number on the screen increments by 1.

  • I think there's probably an app for that! – Sam Feb 6 '14 at 4:42
  • Reading only the title, I thought of "turnstile" , but it looks like @elliot found the answer you were looking for, the hand-held version. – TecBrat Feb 6 '14 at 4:42
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    "Counter", perhaps? – Kris Feb 6 '14 at 6:29
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One such mechanical adding machine is a pascaline also known as pascal's calculator.

Edit You're looking for a tally counter.

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I've always heard it called a click counter, or just a counter.

Normally they have at least two buttons, though. One to reset to zero, one to increment the count.

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