Manual means that the centre is not totally automated.

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What Is the Job Description of a Manual Lathe Operator?
Manual lathe operators calibrate and operate a manual lathe machine or grinder, which is used to cut, sand, knurl, drill, face, and turn materials. As a manual lathe operator, you work with materials such as wood, metal, and glass. Before lathing, you read any blueprints or schematics, calculate the dimensions needed for the job, and inspect your workstation to ensure the machine and other equipment is in working order. You then set-up the machine and load the materials into it. When the equipment is in operation, you must pay careful attention to ensure that the tool settings remain within tolerances. When variations appear, you adjust the controls to correct for it.
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