A TRACER CONTROL APPARATUS

摘要

During a tracing operation of a tracer head for detecting the surface configuration of a model, the current position of the tracer head in the Z-axis direction is detected and a maximum value of the detected tracer head positions is stored in a memory means. When the tracer head is returned from a trace terminating end to a trace starting end, it is quickly returned to a position corresponding to the sum of the stored maximum value and a constant value.