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glass tank
material : heat-resistans glass
size: W130mm x D80mm x H220mm
weight : 210g |
it is a glass for drinking a lot.
a device consists of a bulb shaped container with the glass below.
when the amount in the glass decreases, a constant amount is poured from
the tank into the glass.
never overflowing from the glass because of air pressure and water pressure.
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