To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
DISTORTION EFFECT
Modern electric guitars are used all sorts of devices that change the sound of the instrument. It is very popular so-called "distortion effect". Its essence is that the primary...
“ELECTRONIC” CULTIVATOR
The idea of creating a mechanical assistant for garden cultivation came to me a long time ago. I looked through relevant issues of the “Modelist-Constructor” magazine with descriptions of...
