... ", 4.5", and 6", 8", 10",CASE MATERIAL:Steel case, steel black case, steel chrome plated case, steel gold plated case,brass polished case, all ... %)ASME B40.1 Grade A (2-1-2%)OPTIONS&ACCESSORIES:Custom dial, metric scale, DIN 2.5%,1% accuracy, recalibrators,restrictors ... %)ASME B40.1 Grade A (2-1-2%)OPTIONS&ACCESSORIES:Custom dial, metric scale, DIN 2.5%,1% accuracy, recalibrators,restrictors ...