In the box with old jewelry always find a ring with the fallen from the rim of the stone—put is a piece of school bands. It can be pre-processed, giving a conical shape that allows you to erase the unnecessary line without affecting the neighboring. The usability of such an eraser is obvious: it is not something that is always at hand — right at hand, not lost, and does not interfere with work.
Recommend to read
Rocket SHIP Be-10
With the beginning of the era of jet aircraft on the agenda was a question about a Russian military jet flying boat. Therefore, in may 1947, the OKB G. M. Beriev at the beginning of the...
POCKET WINCH
A huge family of various lifting devices — from the powerful gantry and tower cranes to simple pulley— added another accessory device, designed by the innovators of the scientific...