Gauge Blocks-bg Axminster 47 Piece Gauge Block Set 100249 Opposing faces dead flat and finely polished21pcs - 1mm to 1.19mm x .01mm, (plus 1.005mm)8pcs - 1.2mm to 1.9mm x .1mm8pcs - 2mm to 9mm x 1mm10pcs - 10mm to 100mm x 10mmSupplied in a polished, fitted wooden caseSupplied with an inspection certificate of accuracy-bg View