Features MEASURING RANGE: The measurement range of the vernier caliper is 0‑300mm, with metric and inch units to meet different measuring needs. STAINLESS STEEL: The scribing ruler is made of excellent stainless steel, which is wear resistant, impact resistant, and has a long service life. MAIN PURPOSE: This parallel scribing ruler can be used to measure the outer diameter of various objects, for precise measuring of workpieces. CARBIDE NEEDLE: Equipped with a carbide needle, which can easily pass through the workpiece, with high hardness and no deformation. CLEAR SCALES: With fine grinding and laser engraving, the vernier caliper has clear scale to ensure convenient reading, with high accuracy. Specification: Item Type: Vernier Caliper Measurement Range: Approx. 0-300mm / 0-11.8in Reading Value: 0.05mm, 1/128in Process: Fine Grinding Package List: 1 x Vernier Caliper 1 x Carbide Scribing Head 1 x Leather Case Package List 1 x Vernier Caliper 1 x Carbide Scribing Head 1 x Leather Case