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Publication of FR897498ApublicationCriticalpatent/FR897498A/fr
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B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
