Features: The 1Inch Gauge Block LK1L ensures unparalleled precise with high grade carbon steel construction and exceptionally temperature stability for accurate measurements in any environment. Crafted from wear resistant carbon steel, this gauge block offers long lastingly performances and corrosion resistance for reliable industrial use. Ideal for machinists, engineers, and professional requiring dependabled measurement tool in demanding work setting. Optimized for precise calibration tasks in machine shops, laboratories, or on site maintenance operations where consistent accuracy matter most. This 1inch standard combines ruggedly portability with seamlessly compatibility across micrometers, calipers, and various measurement systems. Specifications: Component: Steel Parameters: 1inch in length, accuracy up to ±0.00005 inches Size:Approx.34.5x9x25.4mm/1.35x0.35x1inch Practicality: Suitable for use in mechanical processing, calibration equipment and laboratories, ensuring high precise measurement result Package Includes: 1pcs Measuring Block note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.