MIL-DTL-16034B
1.2.1.2.1.2 Portable meters. The first digit designates the accuracy classification of portable meters, as follows:
5
- 0.5 percent for DC meters; 0.75 percent for AC meters
7
- 0.25 percent
1.2.1.2.2 Second digit.
1.2.1.2.2.1 Switchboard meters. The second digit designates the type of mounting and the nominal scale length
in angular degrees, as follows:
8
- Flush mounting, 90 degree nominal scale
9
- Flush mounting, 250 degree nominal scale
1.2.1.2.2.2 Portable meters. The second digit designates the number of scale ranges, as follows:
1
- Single range
2
- Double range
3
- Triple range
1.2.1.3 Color scheme. The color scheme of the dial background, markings, and pointer is designated by a
single letter, as follows:
B
- Black dial background, white markings and pointer
W - White dial background, black markings and pointer
1.2.1.4 Full-scale value.
1.2.1.4.1 Single-range meters. The full-scale value of single-range meters with zero at left is represented by
three figures designating the maximum number of units indicated; when the full-scale value is less than three
figures, zeros are inserted at the left to fill out to three figures. Where the letter "R" is used in this group, between
two figures, it represents a decimal point. Example: 1R5 represents 1.5
1.2.1.4.2 Multiple-range meters. The full-scale value of multiple-range meters with zero at left is represented
as described for single-range meters in 1.2.1.4.1, except that the largest full-scale value is selected for the type
designation. Other ranges for each multiple-range meter of a given type designation are as specified (see 3.1).
1.2.1.4.3 Offset zero. The full-scale deflection of zero-center or offset zero meters is indicated by two numbers
designating the numerical value of the end-scale points, with a letter between them designating the decimal value of
the numbers, as follows:
D
- Tenths example: 5D5 represents 0.5-0-0.5
U
- Units example: 1U9 represents 1-0-9
T
- Tens example: 2T2 represents 20-0-20
H
- Hundreds example: 5H5 represents 500-0-500
2
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