When you do not have a suitable spanner to Unscrew the hex-head bolt will help out any screw with two nuts — preferably square-shaped.
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A THERMOMETER FOR ALL
In many cities on the lively streets and highways have electronic thermometers. Some of them, with light of a mercury column, like an ordinary thermometer, the other made in the form of...
SCHEMATICE WITH ICE…
"School" model class F2D — further development of the schematic published in "M-K" № 7, 1986 in the article "Record holder... simplicity." Indigenous improvements of the characteristics...
