To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
MOSKVICH 400
He appeared on the streets of the capital shortly after the war, in 1947. At first glance the design of the car "Moskvin-400" was not fundamental innovations. Its main advantage was a...
THE AIRCRAFT, F-3
In our city of Kingisepp were gliding club ROSTO, which I have since 1996 worked as a flight instructor. Of aircraft in the club were two light aircraft, four airframe. But they were not...