
Medium size ordinary screwdriver is easy to turn into krestovinu — for screws of all sizes Phillips head. This pen old tool we need to sharpen the article scheme. If a lot of work with a large number of screws, it is advisable to use the pen without the pen, inserting it into the brace.
ZUBKOV, Astrakhan
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SUPPORT-UNIVERSAL
If you saw a Board, as shown in the picture, you get four blanks to build universal support for any rack — for example, the hanger or Christmas tree. Assembly can be done with nails or screws.
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...