The pressure from the collet pencil, put on the shank of a suitable diameter drill bit, turning it into the simplest depth gauge required for control when performing nescopeck, equal to the depth of the holes.
Recommend to read
Opposed engine — beyond competition!
This two-cylinder engine, designated DD-700/40, was designed and built by Georgy Dorfman, head of the public design bureau "Aerosam". The motor turned out to be exceptionally successful:...
THE GRIP OF DARKNESS
It's like a magic trick: the metal part is placed on small size book, like a table and instantly welded to it — has no force can not budge it. How it works magnetic plate is designed for...
