To hold the centerline on the workpiece will help the device shown in the figure.
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Gramophone, phonograph, record player, radiogram... Today, the replaced player and even a computer, and instead of plates — laser discs. Well old records where? I propose to use them...
Socket in a lamp holder
To avoid running extra wiring for auxiliary electrical appliances when using a portable lamp, it is enough to fit a homemade adapter into the lamp holder, as shown in the figure. To...
