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 In the manufacture of contact plate faulty relay. Now connect the parts to each other by wires. To increase the “range” of the Telegraph, put a lamp made from tin or heavy paper tube — a tube length of 20 cm.
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TEMPORARY! ON WEDGES
Not always rack shelves require a stationary position. Temporarily any of them can be attached using derevyannyh wedges placed in the gap between the flange and the wall of the Cabinet.
INSTEAD OF SEALANT
Threaded connections, plastic drain pipes kitchen sinks are very fragile. And not only that I tried to make them sealed: and changed the pads, and wrapped around the pipe with rubber...
