Not only plastic, but also wood rulers, especially the long, at carrying out with their help lines are often displaced under the pressure of the pencil or ruling pen. This does not happen, if a measuring instrument to give a small deflection, heating it over the middle of the steam jet from the spout of a boiling kettle. Now, pressing a line of hand tighter squeeze its middle, but the ends. The line will not “go” and if one of the plane covered with a layer of rubber cement. But this method is worse: to move the tool across the paper becomes more difficult. Yu FEDCHUK
Recommend to read
“AEROBI-100”
For the study of near-earth space in the United States since 1948, began to build rockets "Aerobe". To date released a large number of their modifications. A two-stage rocket "Aerobi...
THE CURRENT COLLECTOR ON THE LINE
There many important components and parts to trace in the box? Yes, almost everything — so I will answer any, even the young athlete. But surely he's really isolated from all the other...
