Hillman Vertical Bolt & Nut Gauge is an essential tool designed to accurately measure a wide range of commonly used nuts, bolts, washers, and screws. This compact and easy-to-use gauge eliminates the guesswork by providing precise dimensions of the fastener in your hand, saving you valuable time and money. It supports measurements for UNC and UNF threads, Metric threads, and various screw sizes. The gauge also features a 6-inch fractional scale and a 15-centimeter metric scale for added convenience. Made from durable steel, it measures approximately 37 inches long by 3-1/8 inches wide and 3/8 inch thick, with mounting holes at both the top and bottom for easy storage. This versatile tool is for reducing the hassle of sorting and finding the right fastener size. Model Number: