Qnkaa Dial Gauge Indicator Measuring Range from 01 Resolution up to 0001 Qnkaa runout gauge dial indicator with fine adjustment knob for precise positioning Backlash gauge has Strong 2 magnet surfaces with ONOFF control overall height 9 magnetic stand base Flat back or lug back option included hole size 14 63mm 22 pieces test tips included in the storage case We are dedicated to ensuring your satisfaction If you have any issue during use please feel free to contact us our technical staff will reply and resolve the problem within 24 hours