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1. The product is made of carbon steel. The surface is chrome plated. It has good corrosion resistance and is not easy to rust.
2. The whole product is quenched and it has good wear resistance.
3. The product can measure the inner diameter of the object accurately.
4. The scale of ruler is carved by precise . The scale is clear and easy to read data.
5. The product is compact, portable and suitable for outdoor operation.
Specification:
Feature: