MIL-PRF-10304F (W/ AMENDMENT 1), PERFORMANCE SPECIFICATION: METERS, ELECTRICAL INDICATING, PANEL TYPE, RUGGEDIZED, GENERAL SPECIFICATION FOR (18-JAN-2008)

MIL-PRF-10304F (W/ AMENDMENT 1), PERFORMANCE SPECIFICATION: METERS, ELECTRICAL INDICATING, PANEL TYPE, RUGGEDIZED, GENERAL SPECIFICATION FOR (18-JAN-2008)., This specification is approved for use by all Departments and Agencies of the Department of Defense. This specification covers the general requirements for watertight, ruggedized, 1-inch and 1.5-inch square flange, and 1-inch, 2.5-inch, 3.5-inch and 4.5-inch round flange (flush mounting), and panel type, indicating meters (see 6.1). Meters [self-contained, unless otherwise specified (see 3.1)] covered by this specification should all be of the following types: a. 1-inch, direct current, millivoltmeters, microammeters, milliammeters, ammeters, and voltmeters. b. 1.5-inch, direct current, ammeters, voltmeters, and decibel meters. c. 2.5-inch and 3.5-inch, direct current, alternating current meters. d. 2.5-inch and 3.5-inch, alternating current, rectifier type voltmeters. e. 3.5-inch, decibel meters. f. 4.5-inch, direct current meters. The specified sizes, shapes of flange, color schemes, ranges, kind of currents, and electrical units are indicated in the type designation (see 1.2.2). Unless otherwise specified, each meter should be scaled and calibrated for use on both ferrous panels and nonferrous panels.