The vote recorder is something Thomas Edison invented.
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what are mechanical clocks
mechanical movement is nothing but movement of mechanical branch from lower position to the lowest position...
mechanical coupling can be called as a mechanical device which is used to connect two mechanical links as well as transmit power between them. mechanical joint is just used to joint two linkages . there is no power or torque transmission between them .
mechanical engineering.
A mechanical bush is a cylindrical lining designed to reduce friction and wear, or constrict and restrain motion of mechanical parts.