The holder is suitable for all popular indicators with 5/32 inch shank or dovetail; an SPI 21-378-5 dial indicator with 0-15-0 Reading and 0"-0.03" measuring range is included Indicator features: Easy-to-read 1-1/4" diameter dial has high-contrast markings; Universal positioning capability and jeweled bearing for flexibility and reliability; Balanced 0-15-0 dial for reading the difference from a specific surface reference point; Inch measuring standard: Minimum 0; Maximum 0.030" with 0.0005" Graduations. 0.0005″Accuracy The quickest way of indicating; fits Bridgeport-type milling machines. The holder is suitable for all popular indicators with 5/32 inch shank or dovetail; an SPI 21-378-5 dial indicator with 0-15-0 Reading and 0"-0.03" measuring range is included. Indicator features: Easy-to-read 1-1/4" diameter dial has high-contrast markings; Universal positioning capability and jeweled bearing for flexibility and reliability; Balanced 0-15-0 dial for reading the difference from a specific surface reference point; Inch measuring standard: Minimum 0; Maximum 0.030" with 0.0005" Graduations. 0.0005″Accuracy.