Is all sorts of advice was on the use of caps and lids from unnecessary bubbles and tubes. Here’s another — receiving beautiful shaped heads of bolts or nuts. Look at the picture. Depending on the conceived in the cover is inserted into the bolt (or nut, screwed on a greased bolt) and filled with epoxy resin.
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EARLY FIGHTERS D. P. GRIGOROVICH
The car has received the designation IL-400. This first domestic fighter created after the revolution, aroused great interest from other designers, in particular, of D. P. Grigorovich....
ELLIPSOGRAPH
ELLIPSOGRAPH — is the name of this simple device. It can be used to draw an ellipse with any ratio of the semiaxes. It is enough to set into the holes on the line of alignment pins to...
