The Pin Gage VT .661 (+) from Field Tool Supply is a precision measurement tool made from high-quality steel. Designed for checking hole sizes, this pin gage features a tolerance of +0.0005 inches, ensuring accurate results for quality control in machining and manufacturing. Its durable construction provides longevity and resistance to wear, making it an essential tool for engineers and machinists. This pin gage meets industry standards for precision tools, making it a reliable choice for various applications requiring exact measurements.