I.David Dial Gauge 10/0.01mm is made so high in quality that its accuracy is unbeatable in the Gemological world as it can accurately measure up to 0.01mm.It is used to measure faces for rounds (diamond or other stones) and baguettes. Its precision is unmatched and unparallel in the industry. It is Popularly known worldwide for its accuracy. Normally, any other dial gauge can take accuracy up to only 0.1mm.