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- Hardened stainless steel construction with satin chrome finish, for protection of caliper
- Measures outside dimension (OD), inside dimension (ID), step, and depth (when depth bar is included)
- Raised sliding surfaces to help prevent defacement and wear of scale graduations
- Modest, 14-degree face angle on vernier scale, for improving visibility and reducing the possibility of parallax errors
- Meets Federal Accuracy Specifications GGG-C-111B
