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Apparatus making it possible to plot with precision of the arcs of circle with a slight curvature, or grinding of the portions of surfaces that are cylindrical or spherical and its application to the measurement of the distances as a range finder
Apparatus making it possible to plot with precision of the arcs of circle with a slight curvature, or grinding of the portions of surfaces that are cylindrical or spherical and its application to the measurement of the distances as a range finder