If a barrel is poured in the vegetable garden or cistern in the shower — the water level in them will tell you a simple water-measuring device consisting of a Styrofoam float and stuck to his line or rod with the labels. For greater stability of water-measuring devices are required on the barrel to put the bar with the guide bushing.
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HYGROMETER
The agricultural theme, perhaps the most characteristic in the work of young radio Amateurs from syut Novosibirsk region. 14 new products — electronic devices for agriculture — provided...
VENEER DO
During the construction of the models is often necessary to apply a veneer of varying thickness. Typically the desired thickness is obtained by grinding with fungus with glued on end...
