Home made sand timer.

bottle timer

I made this timer. It has sand inside. I made it because I like to time things. I used my stop watch to time how long it took for the sand to pour through until knew I had the right amount.

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2 thoughts on “Home made sand timer.

  1. I think this is very interesting. What made you choose “65” and “57” seconds? Is that simply the amount of sand that you had in there?

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