Specification Brand : HARFINGTON BulletPoint1 : Size - 1 piece of 1.90mm pin gage, each gauge size is clearly marked. Tolerance: ± 0.001, length: 50mm/2-inch, surface roughness: <0.2um. BulletPoint2 : Material - Made of bearing steel (GCR15) with high permeability, the heat treatment hardness of the pin gauge is up to 58 HRC, sturdy and durable. BulletPoint3 : Feature - Industrial high precision measurement accuracy ± 0.001 (Class X Tolerance ). Smooth surface, anti-rust, and wear-resistant. BulletPoint4 : Application - Used for measuring holes, hole spacing, and slot width, especially suitable for electronic inspection of the precision micro holes and measuring circuit boards in the electrical hardware industry. BulletPoint5 : Note - For high-precision measurement and calibration, it should be placed at a constant temperature of 20°C for 2 hours. Color : Silver Tone FinishType : heat treatment IncludedComponents : -50 x Pin Gauge -1 x Storage Case ItemName : HARFINGTON 0.0748" Pin Gage 1.90mm Diameter Metric Tolerance 0.001mm Class X Plug Gage Pin, Bearing Steel Go No-Go Plug Gage ItemPackageDimensions_Height : 20.8 centimeters ItemPackageDimensions_Length : 0.7 centimeters ItemPackageDimensions_Width : 8.6 centimeters ItemPackageQuantity : 1 ItemShape : rod shape ItemTypeKeyword : hardware-pin-gauges Manufacturer : HARFINGTON Material : bearing steel Material1 : Stainless Steel Material2 : Alloy Steel MeasurementAccuracy : -0.0002" ModelNumber : hta221027hh0391 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : hta221027hh0391 ProductDescription : 1 piece of 1.90mm pin gage, each gauge size is clearly marked. Tolerance: ± 0.001, length: 50mm/2-inch, surface roughness: <0.2um. Made of bearing steel (GCR15) with high permeability, the heat treatment hardness of the pin gauge is up to 58 HRC, sturdy and durable. Used for measuring holes, hole spacing, and slot width, especially suitable for electronic inspection of the precision micro holes and measuring circuit boards in the electrical hardware industry Industrial high precision measurement accuracy ± 0.001 (Class X Tolerance ). Smooth surface, anti-rust, and wear-resistant. Notice: For high-precision measurement and calibration, it should be placed at a constant temperature of 20°C for 2 hours. Available in a range of sizes from 0.10 mm to 2.00 mm