– hardened stainless steel construction with satin chrome finish, for protection of caliper
– four-way measurement capability for outside dimension (od), inside dimension (id), depth, and step measurements
– raised sliding surfaces to help prevent defacement and wear of scale graduations
– modest, 14-degree face angle on vernier scale, to help improve visibility and reduce the possibility of parallax errors
– 0-12′′ range, +/-0.0015′′ accuracy, 0.001′′ resolution
– meets federal accuracy specifications ggg-c-111b