MIL-DTL-3971/1F
TABLE I. Specification data for type I meters.
DASH NO. FIG.
A
B
C
D
E
F
G
Grade
Voltage
Range Readout
2.210 3.00 ⎯
⎯
1
1
2.875
1.265
.150
A
10-40
10,000
9999.9
2.210 3.00 ⎯
⎯
2
1
2.875
1.265
.150
A
40-130
10,000
9999.9
2.625 3.00 ⎯
⎯
3
1
3.500
1.580
.150
A
10-40
10,000
9999.9
2.625 3.00 ⎯
⎯
4
1
3.500
1.580
.150
A
40-130
10,000
9999.9
2.210 3.00 ⎯
⎯
5
1
2.875
1.265
.150
B
10-40
10,000
9999.9
2.210 3.00 ⎯
⎯
6
1
2.875
1.265
.150
B
40-130
10,000
9999.9
2.625 3.00 ⎯
⎯
7
1
3.500
1.580
.150
B
10-40
10,000
9999.9
2.625 3.00 ⎯
⎯
8
1
3.500
1.580
.150
B
40-130
10,000
9999.9
2.135 1.75 ⎯
⎯
9
1
2.810
1.580
.150
B
10-130
10,000
9999.9
2.135 1.75 ⎯
⎯
10
1
3.500
1.580
.150
B
10-130
10,000
9999.9
11
2
2.120
1.750
.150
.900 1.950 .125 1.414
A
10-40
10,000
9999.9
12
2
2.120
1.750
.150
.900 1.950 .125 1.414
B
10-40
10,000
9999.9
Notes:
1. Dimensions are in inches (in.).
2. Tolerances: Dimensional ± 0.015 in., bolt holes ± .005 in. unless otherwise indicated. Angular ± 0.5°.
3. Range and readout are in hours and tenths of hours.
1. REQUIREMENTS
1.1 Dimensions of case. See figures 1 and 2 and table I as applicable.
1.2 Colors, elapsed time indicator:
Hours:
White on black background
Tenths:
Black on white background
1.3 Dielectric strength:
Voltage
200 volts rms
Frequency
60 Hz
Potential
ac
Points of application
Terminals and case
1.4 Weight. 0.60 lbs. maximum
3
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