| 摘要 |
PURPOSE:To measure a dimension with good accuracy even in an object to be measured comprising a low hardness material, by a method wherein an apparatus for detecting pressure applied to a measuring surface is provided to simultaneously detect the pressure and the dimension while the dimension under predetermined pressure is displayed as a measured value. CONSTITUTION:After a dial gauge 21 is secured at a predetermined height, a spindle 22 is downwardly moved and a dimension display apparatus 7 is set to zero. In the next step, an object to be measured is grasped by a surface plate and a measuring surface 23 while the spindle 22 is downwardly moved to apply measuring pressure and the dimension value at the point of time when said pressure reaches predetermined pressure is set as the dimension of the object to be measured. Because a bellows 15 is extended and contracted by the movement of the measuring surface 23, the pressure transmitting medium 10 sealed therein transmits pressure to a pressure converting apparatus 9 to display the measuring pressure by a pressure display apparatus 12. In addition, simultaneously with display of the pressure, a comparison signal 24 is outputted to a dimension value A/D converting apparatus 6. This dimension value A/D converting apparatus 6 is provided with a circuit for temporarily holding the display of the dimension value and, by inputting the comparison signal 24 thereto, the dimension value under predetermined measuring pressure can be displayed. |
