| 摘要 |
The present invention relates to an apparatus for measuring internal and external diameters. The apparatus for measuring internal and external diameters according to the present invention comprises: a bar-shaped support bar; a first jig unit provided on one side surface of the support bar; a second jig unit provided on the other side surface of the support bar; a first measurement ruler fixated at a lower end portion of the first jig unit; and a second measurement ruler fixated at a lower end portion of the second jig unit. The apparatus for measuring internal and external diameters according to the present invention is capable of reducing unnecessary processes when measuring, and increasing measurement precision. |
