To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
FLYING… ON THE GROUND
Svobodnaya radio control model airplanes, gliders and helicopters is currently being implemented with the help of tiny transmitters that have levers or buttons to apply for the model of...
CHROME PLATING? NO PROBLEMS!
Today we can safely say: if you want to get a good result in competitions, use an engine with a “colored” piston-cylinder pair! This is confirmed by the “colored” filling of the motorcycle...
