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
MOTORCYCLE + CAR = MOTORCYCLE
Their paths diverged at the dawn of the automobile industry, and since then the lines of development have continued without intersecting until now... We are talking about a motorcycle and...
GRAVITEAM
To explore the law of gravity is always more difficult than any other section of the school of physics. The fact that to explain this phenomenon the teacher has literally "on fingers"....
