The ordinary carpenter’s square — the right tool: it is easy to check or to mark the connection of the parts at right angles. However, he will be able to in addition to these functions and even measure the length of the parts, if you supply it with the proper scale. To do this, regardless of it metal or wood, it is easiest with the student line, gluing it on the long side of the polygon. V. GOLOVASHIN, Rybnoe, Ryazan region.
Recommend to read
GRINDS… AIR
Innovators of the Sumy machine building production Association named after M. V. Frunze developed high-performance grinding-machine, different from the existing compact and low weight....
“Whirlwind” from a cup
The chemical method of plant protection against pests, diseases, and weeds remains the main one today and for the foreseeable future. Most often, it is implemented by spraying agricultural...
