Mitutoyo 530-101 Vernier Calipers, Stainless Steel, for Inside, Outside, Depth and Step Measurements, Metric, 0"/0mm-150mm Range, +/-0.05mm Accuracy, 0.05mm Resolution, 40mm Jaw Depth | Stainless Steel

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