Frankford Arsenal Electronic Calipers are a must-have tool for the serious reloader to keep on a reloading bench. These calipers measure not only the total length of your reloads, but they can also measure the diameter of your cast bullets. The applications are nearly unlimited! This pair of calipers is made from stainless steel with a high-contrast LCD window protected by glass to ensure many years of dependable durability. These calipers have a range of 0 to 6 inches and are accurate within 0.001 inches