The GAGE BLOCK 0.139 GR 0 from Field Tool Supply is a precision tool designed for accurate measurement and calibration. Measuring 0.139 inches, this gage block is crafted from high-quality materials to ensure durability and precision. It meets ISO compliance standards, making it suitable for various industrial applications. Ideal for machinists and quality control professionals, this gage block provides reliable performance in setups and measurements. Its robust design allows for repeated use without compromising accuracy, making it an essential tool for any workshop.