The Vermont Gage Go Plus Pin Gauge is a precision tool for measuring the size of openings or spaces in metal workpieces. Made by Vermont Gauge Company in the United States, this pin gauge has a size of 0.2370 inches with a tolerance of .00004 inches. The gauge comes with a case for easy storage and protection when not in use. This high-quality pin gauge is essential for metalworking inspection and measurement to ensure accurate results and quality craftsmanship.