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
THE SOLDERING OF THE RESISTOR
I recommend readers of the magazine is easy to count, easy to manufacture and very reliable electric soldering iron. At my house, for example, these range from "krohotulki" for work with...
THE DRAG — SLED
Designers snowmobiles often use the brake — it's called scraping and is a any lever, bury in the present. Such a device will be useful on a conventional children's sleds. It will be...
