Mitutoyo 505-677 Dial Calipers Inch White Face for Inside Outside Depth and Step Measurementsbr Click below to buy on Amazon: Dial for measuring vernier scale for ease of reading br Hardened stainless steel construction for protection of caliper components br Four-way measurement capability for outside dimension OD inside dimension ID depth and step measurements br Titanium nitride TiN coating on beam surfaces for resistance to wear br Inch system of measurement for high-precision readings