To remove or hang on the door hinges alone — for many, this becomes an intractable problem. Make the device shown in the figure, and the case will move forward.
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OBJECTIVE EXAMINER
In the sixth issue of our magazine in 1974 we told about the device "Pulse" for the control of knowledge of students. Practice operating the machine created by the participants NTTM...
DISPENSER FOR EPOXY RESIN
As is known, the epoxy consists of resin and hardener. Before applying them mixed in a ratio of 8:1 by volume, and this mass in three or four hours into a hard synthetic material. To...
