Feature:1. This angle ruler is forged from stainless steel, with high hardness, strong toughness and durability.2. The center angle gauge is thickened and painted with varnish to effectively prevent the ruler body from abrasion.3. This stainless steel angle ruler adopts laser scale for clear reading and easy operation.4. Multiple functions are more convenient. It can pass the line at 45, 90, and the circular center.5. Widely used in hardware machining, cylindrical centering and marking, angle marking, marking discs, etc.Specification:Item Type: Center Angle GaugeMaterial: Stainless steelUses: Widely used in hardware machining, cylindrical centering and marking, angle marking, marking discs, etc.Specification: Approx. 100 x 70mm / 3.9 x 2.8inDiameter Range: Approx. 4 ~ 90mm / 0.2 ~ 3.5inTolerance: 0.15mm.Package List:1 x Angle Ruler1 x Leather Case