In water columns or country water supply systems where the water pressure is generally weak, long hold the bucket to the shed and wait until it is filled, very tiring. Made of metal strips the clamp-hook and secure it near the crane — suspended bucket on it will free your hands from unnecessary strain.
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LIGHT TELEGRAPH
Someone who knows Morse code or just going to study it, can build a simple device, shown in the figure. On a plywood Board install the battery B and the lamp L of the flashlight. Contactor...
THE BALL INDICATOR
If, during the filling of high capacity water (e.g. drums) intended for watering the garden, throwing a rubber ball of small size, its appearance over the edge of prompts to close the...
