Satin finish stainless steel has no glare and is rust and stain resistant Advanced sleeve design with staggered lines and distinct figures for precise and easy readability Convenient decimal equivalents on Inch tools Balanced frame and thimble design insure easy handling and better readability Ring-type knurled lock nut for quick and sure locking The combination ratchet and speeder for uniform pressure and quicker adjustment Rigid one-piece frame of drop forged steel Carbide measuring faces.