Niigata Seiki SK block gauge 0 class equivalent item bulk item 3.50mm GB0-350

High precision class 0 equivalent model. Uses: As a reference gauge for general measurements and work. Used as space blocks and high value-added parts. Material: High carbon high chromium steel Specifications: Cross-sectional dimensions: 10mm or less...30(0~-0.3)×9(-0.05~-0.2)mm Over 10mm...35(0~-0.3)×9(-0.05~-0.2)mm・Thermal expansion Coefficient: 11.5×10-6/K Standard: 3.50mm