To pull the oars will be much easier if you install in a boat footrest. It consists of two shaped holders and crossbar. As the crossbar, you can use the cut water pipe.
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RIGHT IN THE MIDDLE
If you want to cut the pipe lengthwise into halves, it is necessary to outline its diametrical plane. It's easy to do and without any measuring devices by using a sheet of paper....
TEST QUARTZ
allows you to quickly verify the health of the quartz resonators. Diagram of the device consists of a generator (T1), detector (D1, D2) and DC amplifier (T2). By connecting the quartz to...
