Stainless Steel Vernier Caliper is , it can measure outside dimension (OD), inside dimension (ID), step, and depth a multifunctional tool. a fine-adjustment carriage to fine-feed the slider for heavy duty series. Engraved scale easy to read. Vernier Caliper made of carbon steel, the has clear and is durable. Durable manual caliper with smooth slide. It's convenient to use with one hand without.