Made from 1/2″ wide, 300 series stainless steel. Used in manufacturing and maintenance where stringent, corrosion resistant, and low magnetic material is needed to check extremely tight tolerances or close spacing. Material is a good conductor and will withstand high temperatures; used in the aircraft, power/utility, food, automotive, and marine industries. Thickness is clearly marked every 6″ in metric and decimal. Measures 1/2″ wide by 25′ long. Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.