Digi-Pas DWL3000XY 2-Axis Digital Machinist Level & Inclinometer 0.002&rdquo;/ft (0.2mm/M) 6 Inch Digi-Pas 2-AXIS Machinist Level replaces Old-fashioned Spirit Vial Levels. Tedious repetition of checking 'bubble' position between tiny graduation lines is NOW THINGS OF THE PAST INSTANTLY read both X&Y axis level status (Digital & Graphic Animation) while SIMULTANEOUSLY adjusting machines footings. PC softwareBasic version with limited feature is FREE. RESOLUTION: 0.002/ft or 40-second (0.18 mm/M or 0.01). Measurement range: 0 to  90.001-Axis; 0 to  10.002-Axis; Accuracy: 0.002/ft ( 0.01) from 0 to  10.00;  0.03 at other angles OPTIONAL Professional Software (DWL3000XY-SW) for FULL FEATURES on data display & logging saved in Excel format for further analysis. Built-in vibro-meter to detect relative vibration magnitude For users who needs a NIST-traceable Calibration Certificate with data, please visit our website for reference sample certificates and contact our sales support team.