Standard shunts are available in any Millivolt rating - 25mV - 50mV - 60mV - 75mV - 100mV - 150mV Canadian Shunt is able to certify any make of shunt to an uncertainty of ± 0.1% traceable to N.R.C., N.I S.T., S.I. Our LA, LB and LC shunts are built to U.S. Military Specification A-A-55524 which supersedes MIL-S-61B.