The 120A-6 is a 6-inch white dial slide caliper crafted from hardened stainless steel with a plastic case. It features a precision dial with 0.001-inch graduation, knife-edge contacts for accurate inside and outside measurements, and an easy-to-use one-hand operation with a thumb-operated fine adjustment roller. The caliper includes a positive split-gear anti-backlash mechanism, a lock screw for the dial bezel, and a sliding jaw lock. Designed for durability and precision, it is ideal for mechanics and toolmakers requiring reliable, direct reading measurements. Additional features include sharp black graduations on a satin-finished bar, a covered rack depth rod, and 100-inch bar graduations. It excels in testing and measurement applications.