MIL-PRF-10304/9C
TABLE I. Special features, meter MR26M297SPECR.
NOTE: Special meter MR26M297SPECR shall meet the requirements specified for meter
MR26*020DCUAR, except for the following features:
Special
Similar
DC
Ohms
AC volts
µA
Scale µA
µA
MR26M297SPECR
MR26*020DCUAR
Scale
Scale
∞
0
0
0
0
0
0
0
2
5
12.5
1,000
8.5
2
5
4
4
10
25
750 10
4
10
10.5
6
15
37.5
500 15
6
15
20
8
20
50
400 18
8
20
30.5
10
25
62.5
300 24
10
25
42.5
12
30
75
200 34.5
12
30
55
14
35
87.5
180 37
14
35
69
16
40
100
160 40.5
16
40
83
18
45
112.5
140 45.5
18
45
97
20
50
125
120 52
20
50 111.5
22
55
137.5
100 60
22
55 126
24
60
150
90 64
24
60 141
Colors:
26
65
162.5
80 69.25
26
65 155.5
Dial........................ Flat white, Munsell No. N8.0
28
70
175
70 76.5
28
70 170
Markings, numerals, and letters"
30
75
187.5
60 85
30
75 184
Resistance scale .. Green, Munsell No. 2.5G5/8
32
80
200
50 94
32
80 198
Dc voltage and
34
85
212.5
45 98
34
85 211
current scale ....... Black, Munsell No. N1.0
40 104
36
90 224
36
90
225
AC voltage scale... Purple-blue, Munsell
35 113
38
95 237
38
95
237.5
No. 5.OPB3/12
40
100
250
30 124
40
100 250
28 129
Kind of pointer.............Knife edge
26 134.5
24 140
22 145
Maximum projection with meter mounted on
20 150
3/8-inch panel:
18 155.5
in front of panel...... 41/64 inch
16 161
Barrel depth behind panel¾ inch.
14 169
(A plastic space, if necessary to accomplish with
12 178
above, may be utilized and must be furnished
10 187.5
the meter.)
9 193.5
Dc range .............. 250 µA ±2 percent
8 19
Power consumption (loss): 62.5 mV ±2 percent
7 204.5
at 25° ±2°C
6 210
250 ohms nominal at
5 215.5
25° ±2°C
4 221.5
270 ohms nominal at
3 228
55° ±2°C
2 234.5
210 ohms nominal at
1 242
40° ±2°C
0 250
3