Abstract: Reference gauge for calibrating measuring machines whose reference dimension can be measured both on its inner size and by its outer size, thus making it possible to keep the reference dimension less than 15 millimeters, even for calibrating measuring machines equipped with probe tips having a diameter greater than that dimension. The calibration method with the aid of such a reference gauge comprises in certain cases the measuring of the calibrated distance between two outer surfaces of a protruding volume.

Abstract: Method enabling a command to switch the measure mode to be entered in a single vertical axis dimension-measuring column. The mode witch command is entered by pressing the probe tip against the piece to be measured during a time interval greater than a predetermined value. The measuring and displaying system then engages in a search mode of the turn-back point of said piece to be measured. Application: measurement of inner or outer diameters by means of a single-axis measuring column. The method allows the hole's minimal and maximal points to be determined with a minimum of handling operations.

Abstract: Method enabling a command to switch the measure mode to be entered in a dimension-measuring column (1) provided with a probe tip (44). The command is entered by acting on the angular position of a turning control button, for example by pivoting it until a predetermined angular position. A tactile reaction is perceived by the operator when a predetermined threshold is reached. Advantages: it is possible to enter the commands to switch measuring mode intuitively and without the hands letting go of the turning button.

Abstract: Method enabling a command to switch the measure mode to be entered in a single vertical axis dimension-measuring column. The mode witch command is entered by pressing the probe tip against the piece to be measured during a time interval greater than a predetermined value. The measuring and displaying system then engages in a search mode of the turn-back point of said piece to be measured. Application: measurement of inner or outer diameters by means of a single-axis measuring column. The method allows the hole's minimal and maximal points to be determined with a minimum of handling operations.

Abstract: Trigger probe, constructed on the principle of the Boys connection, serving to detect the contact between the probe's stylus and a piece to be measured, comprising an electric circuit with at least one switch, whose contact elements are positioned by means of several connecting elements of the circuit.

Abstract: Column for measuring longitudinal dimensions (1) comprising: a supporting frame (2), a carriage (3) capable of moving along a measuring axis (z) along the supporting frame, a probe tip (44) connected to said carriage and designed to be brought into contact with the piece to be measured, a motorized driving device of the carriage comprising a cable or belt (40) for moving said carriage along said measuring axis and a driving motor (5), a system for measuring the position of said carriage (3) along said measuring axis. The driving motor drives an upper driving pulley through a reducing gear and a friction element. The motor, the reducing gear and the friction element are all integrated inside the pulley. Advantages: gain of space. Reduction of the number of parts. Reduction of the constraints applied by the driving belt on the carriage.

Abstract: Method enabling a command to switch the measure mode to be entered in a single vertical axis dimension-measuring column. The mode witch command is entered by pressing the probe tip against the piece to be measured during a time interval greater than a predetermined value. The measuring and displaying system then engages in a search mode of the turn-back point of said piece to be measured.

Abstract: Reference gauge for calibrating measuring machines whose reference dimension can be measured both on its inner size and by its outer size, thus making it possible to keep the reference dimension less than 15 millimeters, even for calibrating measuring machines equipped with probe tips having a diameter greater than that dimension. The calibration method with the aid of such a reference gauge comprises in certain cases the measuring of the calibrated distance between two outer surfaces of a protruding volume.

Abstract: Column for measuring longitudinal dimensions (1) comprising:

Abstract: Method enabling a command to switch the measure mode to be entered in a dimension-measuring column (1) provided with a probe tip (44). The command is entered by acting on the angular position of a turning control button, for example by pivoting it until a predetermined angular position. A tactile reaction is perceived by the operator when a predetermined threshold is reached.

Abstract: Trigger probe, constructed on the principle of the Boys connection, serving to detect the contact between the probe's stylus and a piece to be measured, comprising an electric circuit with at least one switch, whose contact elements are positioned by means of several connecting elements of the circuit.

Abstract: Method enabling a command to switch the measure mode to be entered in a single vertical axis dimension-measuring column. The mode witch command is entered by pressing the probe tip against the piece to be measured during a time interval greater than a predetermined value. The measuring and displaying system then engages in a search mode of the turn-back point of said piece to be measured.

Abstract: The device is intended for an independent measuring apparatus which can be displaced on a measurement plane on which a part to be measured is immobilized. This device comprises a slide which is displaceable along a slideway of the apparatus perpendicular to the measurement plane, a carriage mounted for displacement in said same direction against opposing forces of two springs intended for the applying of a sensing force, and a support bearing a probe which is mounted for displacement on the carriage in a direction perpendicular to that of the vertical slideway. Upon the search for the point of regression of the probe which is necessary for the detection of the two diametrically opposite points of a bore of the part to be measured, the entire apparatus is immobile on the measurement plane and only the feeler support is displaced on the carriage. Automation of the search for the point of regression is also shown.