1 Inch Precision Dial Indicator 0.001 Inch Graduation Lug Back Gauge Weight: 7 Ounce *Rough Estimation* Measuring Range: 0- 1 Inch Graduations: 0.005 Inch Reading: 0-100 Lug back: 1/4 Inch Holes Dial diameter: 2-3/8 Inch Stem diameter: 3/8 Inch Accuracy (1st 2.5 Rev): +/- 0.001 Inch Accuracy (Overall): +/- 0.002 Inch Simple Structure, Easy To Use And Maintenance, High Sensitivity, Precision Is Stable And Reliable The Dial Is Clear, Convenient For Reading Qty: 1 Light Item