Manufacturer Part Number: 139-179|Type|Minimum Measurement (Inch)|4inMinimum Measurement (mm)|4inMinimum Measurement (Decimal Inch)|4inMaximum Measurement (Inch)|36inMaximum Measurement (Decimal Inch)|36inMaximum Measurement (mm)|36inGraduation (Decimal Inch)|0.0010Graduation (mm)|Calibrated|Traceability Certification Included|Maximum Extension Rod Length (Inch)|16.0000Accuracy (mm)|0.00012+m+(0.00004xR/20) inAccuracy (Decimal Inch)|0.00012+m+(0.00004xR/20) inThimble Type|Accuracy (micro m)|0.00012+m+(0.00004xR/20) inNumber of Contact Points|0Number of Extension Rods|5Rod Diameter (mm)|Rod Diameter (Decimal Inch)|0.6700Rod Diameter (Inch)|Number of Setting Rings Included|0Travel (Decimal Inch)|Travel (Inch)|1Setting Ring Diameter (Decimal Inch)|Measuring Face Material|Finish/Coating|Includes|1, 2, 4, 8 & 16" ExtensionsDigital Counter|NoFeatures|Interchangeable Extensions in a Hollow Pipe DesignPSC Code|UNSPSC Code|