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3000 BCE
solar watch
It is a clock which used a giant stone with numbers carved in the ground around it and which were covered by the shadow of the stone and that was the time -
700
Hourglass
It is a wood and sand glass clock which was turned over when the sand stopped falling -
Wall clock
It is a wooden clock normally which by means of mechanisms that used nuts to count the time -
wristwatch
it is a metallic clock with a memory card to see the time, with a calculator, ets.
