
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
A PUMP CONNECTED TO THE SUN
No one in the small gardening cooperative near Bryansk suspected anything miraculous. The gardeners had only one thing on their minds: extracting water from wells. In hot weather, every...
PROFILE ONLY
(THE BUILD-POLYOPIA). Building the model-polyopia begin with the manufacture of the fuselage (Fig. 1), the contours of the lateral projection should most accurately reflect the...