In construction you often have to deal with the internal measurements. For example, to determine the distance between the form panels, the value of the window or doorway. A good assistant in such cases would be sliding ruler, made of tube and metal rod with applied risk. V. ANTIPIN
Recommend to read
UNUSUAL ELECTROLET
With a slight rustle of the blades of the propeller model took to the air. Passed one circle, two, three. All this is familiar today in many circles of our country guys raise flying...
HOW TO SHORTEN THE BOLT
To shorten a long bolt or stud, such a task is not so rare encounter tinkerers. In order not to damage the grip of the thread, I suggest to use a simple tool, which is a metal strip 5-10...
