To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
SIXTY-NINTH
This car is well known to motorists. She enjoyed a well-deserved recognition among agricultural workers, geologists, soldiers, builders. For two decades she was on the production, which...
SUPERESSENCE “LARGE FLEET”
The desire to create a "super ship", more powerful than any potential enemy of his class, at different times, was typical of the designers and crafters from different countries. But...