1.Hardened stainless steel construction with satin chrome finish, for protection of caliper. 2.Four-way measurement capability for outside dimension (od), inside dimension (id), depth, and step measurements. 3.Raised sliding surfaces to help prevent defacement and wear of scale graduations. 4.Modest, 14-degree face angle on vernier scale, to help improve visibility and reduce the possibility of parallax errors. 5.Meets federal accuracy specifications ggg-c-111b.
Depth bar: Blade
Inch graduation: .001
Remarks: High accuracy model: A plus or minus 0.03mm