
Convenient storage of small tools is not only about safety and effectiveness. I think that drills, taps, needles, and other small tool is best stored upright in a plate of thick rubber. Perforations drilled or punched with a sharpened pipe, and their diameters must be smaller than the diameters of the installed items by 30 — 50 %.
M. ONOPRIENKO, Stavropol
Recommend to read
ETERNAL LOOP
Metal soda cans and many canned goods now opened thanks to the special loop-shaped handle on the lid. And if the capacity is usually just thrown away, then the loop is easy to find...
A simple voltmeter
measuring constant voltage value of 100 V. It is produced by the bridge circuit for the transistors T1 and T2. In one diagonal bridge included a measuring device in the other power...