To fix the drawing paper on the drawing Board, a Board which is made of particle Board, is difficult. For anchoring one corner you have to use some drawing pins, as they bend. If you use a magnet like a hammer, then every button, holding it will be included in the Board and fix the paper.
A. PROKOPENKO, Kiev
Recommend to read
ACCURATE MARKINGS
To spend simply a circle on a plane costs nothing with the help of a compass. But what if this line should cover a cylindrical billet? For a rough layout, you can use string or a rubber...
MULTIRANGE TIME RELAY
Time relay, the readers, used in the automation devices in the workplace and at home. The device is simple in design, has small dimensions, is reliable in operation, but its main feature...