Measures clearance from .0015" to .035" (.038 to .889mm). Includes .010" brass blade for electronic ignitions. Inches Millimeters Inches Millimeters Inches Millimeters .0015 .038 .010 Brass .254 .021 .533 .002 .051 .011 .279 .022 .559 .0025 .063 .012 .305 .023 .584 .003 .076 .0013 .330 .024 .610 .004 .102 .014 .356 .025 .635 .005 .127 .015 .381 .026 .660 .006 .152 .016 .406 .028 .711 .007 .178 .017 .432 .030 .762 .008 .203 .018 .457 .032 .813 .009 .229 .019 .483 .035 .889 .010 .254 .020 .508
Measures clearance from .0015" to .035" (.038 to .889mm). Includes .010" brass blade for electronic ignitions.