This Engine Lathe is equipped with automatic longitudinal feed and automatic cross feed. To Operate the automatic longitudinal feed, loosen Knob S by unscrewing, then push it down as far as it will go, and screw tight. Fasten Knob Q tight. The automatic longitudinal feed is now in operation. To release automatic longitudinal feed, simply unscrew Knob which releases the friction feed. To connect the automatic cross feed, unscrew Knob S and lift it as high as it will go, then screw tight, fasten Knob Q tight. Now the automatic cross feed is connected. When the automatic cross feed is connected, the automatic longitudinal feed is disconnected. When the automatic longitudinal feed is connected the automatic cross feed is disconnected. There fore it is impossible to have both feeds connected at the same time, and while one feed is in oper ation it is impossible for the other feed to drop in.