Fowler 52-520-110-2 Brass Premium Dial Indicator, White Face, 1" Total Travel Fowler 1 Whiteface Premium Dial Indicator with NIST Certificate of Calibration Full 3 year warranty offered by Fowler High Precision on material and workmanship Stem has 1" travel and carbide ball contact point for a long measuring range and long life, 0-.100 Reading, .001" resolution Solid steel housing and carbide contact point, includes tolerance markers Magnetic back has a protective coating and is used to position indicator on most metal surfaces, meets AGD Group 2 specifications for dial face diameter