Robust enamelled framed external micrometer with tungsten carbide tipped avails for high precision measurements. Features & Benefits • Enamelled frame with tungsten carbide tipped anvils for hardwearing use • Excellent fitted metal case with adjusting spanner • Range Size from 25 - 50mm & over supplied with setting standard • Manufactured to BS 870 standard • Supplied in an impact resistant fitted plastic case • Resolution: 0.01mm • Weight 230g Notes • Adjusting spanner & metal case included