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Prerequisite: for the tracer to correctly detect the horizontality of the lens, the lens must be clean and marked using a white felt tip
marker with:
either three focimeter dots
or a horizontal line which must not touch the edges of the lens (a space of at least 5 mm is required)
Avoid using red markers
Tracing
Press to select optical tracing .
Press to indicate the eye to trace.
Press to select a type of frame.
Press to select the pattern or press to select the demo or recut lens.
Press to select the type of play between the demo lens and the frame.
Lower the tube.
Position the reflector.