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
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ILYUSHIN Il-28
The design of the OKB Ilyushin a new frontline jet bomber with a maximum speed of 900 km/h and flight range of 2,000 km was carried out in initiative order. The aircraft, designated...
CLIP-CLOTHESPIN
For fixing the film during drying, usually use special clothespins or clips. But if these instruments are at hand does not, they will replace ordinary paper clip.
