TB 9-5210-205-40
Table 1. Calibration Description Continued
MAXIMUM PERMITTED DEVIATIONS OF THE LENGTH AT ANY POINT
AND PARALLELISM TOLERANCES FOR METRIC GAGE BLOCKS
Grade AS-1
Grade AS-2
(former Grade 3)
Nominal Length
(m)
(m)
Range, ln (mm)
tv2
te1
tv2
1
te
ln ≤ 0.5
0.30
0.16
0.60
0.30
0.5 < ln ≤ 10
0.20
0.16
0.45
0.30
10 < ln ≤ 25
0.30
0.16
0.60
0.30
25 < ln ≤ 50
0.40
0.18
0.80
0.30
50 < ln ≤ 75
0.50
0.18
1.00
0.35
75 < ln ≤ 100
0.60
0.20
1.20
0.35
100 < ln ≤ 150
0.80
0.20
1.60
0.40
150 < ln ≤ 200
1.00
0.25
2.00
0.40
200 < ln ≤ 250
1.20
0.25
2.40
0.45
250 < ln ≤ 300
1.40
0.25
2.80
0.50
300 < ln ≤ 400
1.80
0.30
3.60
0.50
400 < ln ≤ 500
2.20
0.35
4.40
0.60
MAXIMUM PERMITTED DEVIATIONS OF THE LENGTH AT ANY POINT
AND PARALLELISM TOLERANCES FOR INCH GAGE BLOCKS
Grade AS-1
Grade AS-2
(former Grade 3)
Nominal Length
(in.)
(in.)
Range, ln (in)
tv2
te1
tv2
1
te
ln ≤ 0.05
12
6
24
12
0.05 < ln ≤ 0.4
8
6
18
12
0.45 < ln ≤ 1
12
6
24
12
1 < ln ≤ 2
16
6
32
12
2 < ln ≤ 3
20
6
40
14
3 < ln ≤ 4
24
8
48
14
4 < ln ≤ 5
32
8
64
16
5 < ln ≤ 6
32
8
64
16
6 < ln ≤ 7
40
10
80
16
7 < ln ≤ 8
40
10
80
16
8 < ln ≤ 10
48
10
104
18
10 < ln ≤ 12
56
10
112
20
12 < ln ≤ 16
72
12
144
20
16 < ln ≤ 20
88
14
176
24
te = Limit deviations of length at any point from nominal length.
1
tv = Tolerances for parallelism.
2
3
