MIL-DTL-3971E, DETAIL SPECIFICATION: METERS, TIME TOTALIZING, NON-HERMETICALLY SEALED, ELECTRICAL: GENERAL SPECIFICATION FOR (24 JAN 2001) [SUPERSEDING MIL-M-3971D]

MIL-DTL-3971E, DETAIL SPECIFICATION: METERS, TIME TOTALIZING, NON-HERMETICALLY SEALED, ELECTRICAL: GENERAL SPECIFICATION FOR (24 JAN 2001) [SUPERSEDING MIL-M-3971D]., This specification covers the general requirements for electrically operated non- hermetically sealed meters that automatically measure, and cumulatively register the total operating or idle time of the circuit, machine or system to which connected.