Calipers are one of the most popular precision measuring instruments because they are relatively inexpensive and versatile tools. Calipers are used to measure the distance between two opposite sides of an object. They are available in Digital, Dial, and Vernier styles with features such as SPC Output, Solar, and Waterproof and Dust Resistant. Calipers provide measurements of length, depth, inside diameter, and outside diameter - known as ID and OD. MSI Viking sells all the most popular brands of calipers, including Mitutoyo, Mahr Federal, Starrett, Brown & Sharpe, TESA, Fowler, and many more.