MIL-DTL-81219C
3.2.1.4.2 Divisions. The timer scale shall be divided as below:
a. MS90373 at least 10 scale divisions, each corresponding to 1/10th of the
full scale length.
b. MS90386 as specified on the MS sheet.
3.2.1.5 Terminals. The terminals shall be solder type and shall be capable of carrying
the applicable current and voltage.
3.2.1.6 Polarity. On all DC indicators and regulators, the symbol "+" shall be marked or
stamped in a permanent, legible manner on or as close to the positive terminal as is practicable.
3.2.1.7 Finish. The indicator shall be finished in a durable black color. The finish shall
not melt, crack, blister or scale as a result of the tests specified herein
3.2.1.8 Identification of product. Meters, assemblies and parts thereof shall be marked
for identification in accordance with MIL-STD-130. The indicator shall be identified in
accordance with the applicable MS sheet.
3.2.1.9 Interchangeability. All parts having the same manufacturer's part number shall
be directly and completely interchangeable with each other in respect to installation and
performance.
3.2.1.10 Holder. A mounting holder, when required, shall be in accordance with the
applicable MS sheet.
3.2.1.11 Input power. The indicator shall supply the range of voltage, and if applicable
frequency, specified on the applicable MS sheet. It shall be controllable over these ranges.
3.2.1.12 Weight. The total weight of the indicator or indicator assembly (indicator,
holder and regulator) shall not exceed that specified on the applicable MS sheet.
3.2.2 Construction. The indicator shall be constructed so that no parts will work loose in
service. It shall be built to withstand strains, jars, vibrations, and other conditions incident to
shipment, storage, installation, and service.
3.3 Performance. The indicator shall give the specified performance when subjected to
any of the tests or combinations of tests specified in section 4.
3.4.1 Low temperature storage. The indicator shall withstand a temperature of -80°C (-
112°F) as specified in 4.6.12 and meet the operational requirements of 3.4.8.
3.3.2 Dielectric strength. The indicator shall be capable of withstanding an application
of 1500 Vac, 60 Hz between terminals and case at sea level barometric pressure without damage,
arcing or current leakage in excess of 1 milliampere (see 4.6.3).
3.3.3 Thermal shock. Unless otherwise specified in the applicable MS sheet, the
indicator shall operate without degradation through a range of -55°C to 85°C (-67°F to 185°F)
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