This series was designed to meet industrial requirements and for other applications where rugged metal or
phenolic cases with glass fronts provide long service under adverse conditions. Round models ranging in
size from 2-1/2" to 4-1/2" are produced in either the ±2% of full scale AC repulsion or DC Moving Coil version.
AC ranges are standard up to 50 amperes self contained and 600 AC volts. Ranges down 10 milliamperes AC
are also standard.