... : from 1.0mm to 10.0mm4)Counting direction: I=Clockwise and E=Anticlockwise5)Hollow shaft(inside diameter): Φ ... Φ30mm6)Color: O=orange, B=black, G=greyDigital Position indicatorSANKQ specialized in manufacturing professional with woodworking machine accessories more ... than 10years.such as digital position indicator, position indicators, indicators, bakelite handle and knob, lobe ...