One who often works with paper and ink, it is recommended to do simple drawing tool simplifies many design works. In principle, it is a cross between a poster with pen and brush. To make it, you need to whittle out wooden planks a simple holder, made of tin to cut two plates and to procure a few foam strips. How is going to “pen” it is clear from the figure.
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Water for household needs and irrigation is supplied to a suburban area from the aqueduct or from a well (well of water) pump. In the case of breakage of the pump or too low pressure...
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In October 1996 in the Udmurt Republic celebrated the 65th anniversary of the system of children's technical creativity. In 1931 in Izhevsk was opened the first children's technical...