Manufacturer Part Number: 50446|Level Type|MachinistsLength (Inch)|18Graduation Sensitivity Per 10 Inches|0.0050 in; 0.0500 inBase Flatness (Inch)|Base Flatness (Decimal Inch)|Base Flatness|Overall Height|Overall Length|457.2cm; 457.2in; 457.2mm; 457.2yd; 457.2m; 457.2ftOverall Width|Material|Cast IronMount Type|Number Of Horizontal Vials|2Housing Color|Features|Ground & Graduated Main VialsWidth (Inch)|Height (Decimal Inch)|Height (mm)|Height (Inch)|Catalog Industry Number|98Z-18SPI Part Number|Graduation Sensitivity Per 10 Inches (sec.)|0.0050; 0.0500Width (Decimal Inch - 4 Decimals)|Length (mm)|457.20Number Of Vials|2Width (mm - 2 Decimals)|Length (Decimal Inch - 4 Decimals)|UNSPSC Code|