| 摘要 |
<p>An internal thread micrometer, comprising: replaceable measuring heads (13 and 14), bent measuring rods (12 and 15), a drive shaft (28), a supporting sleeve cylinder (2), a differential cylinder (4), an adjustment knob (7), a ruler (9), and a digital display device (56) dedicated for digitally displaying the internal thread micrometer. The two replaceable measuring heads (13 and 14) are arranged respectively on the fixed bent measuring rod (12) and on the mobile bent measuring rod (15). The fixed bent measuring rod (12) and the ruler (9) are connected. The mobile bent measuring rod (15), the supporting sleeve cylinder (2), and the drive shaft (28) are connected. The drive shaft (28), the differential cylinder (4), and the adjustment knob (7) are connected. The supporting sleeve cylinder (2), the ruler (9), and the differential cylinder (4) are connected. The digital display device (56) is arranged on the ruler (9) dedicated for digitally displaying the internal thread micrometer.</p> |
