Equipped with the “capa ì system” – That’s Brown & Sharpe’s patented measuring system, which provides absolute and comparative measurement. Featuring the patented “capa ì system” computer chip for fast, reliable and accurate measuring. Interapid digital calipers are uniquely designed with titanium-coated nitride (TiN) jaws for exceptional durability. Produced with a combination of non-ferrous alloy and stainless steel, these tools are rugged and lightweight. NOTE: Depth rod unavailable on 12" model.