unit of measure
conversions equivalences

italiano misure english measure
Conversion table
Conversion factors in PDF

equivalences table of sieve for granulometry measure

ISO 3310
UNI 2331/2332
ASTM E 11-70
TYLER
DIN 4148 & NFx11-501
BS 410
R20/3 mm
R20 mm
R40 mm
n.
mm
mesh
mm
mesh
mm
R10 mm
R20 mm
mm
4
4
4
1
4
5
4
5
4
4
.
4
.
.
3.35
2
3.35
6
3.35
6
3.35
.
.
3.35
.
3.15
.
3
3.15
.
.
.
.
3.15
.
.
2.8
2.8
2.8
4
2.8
7
2.8
7
2.8
.
2.8
2.8
.
2.5
.
5
2.5
.
.
.
.
2.5
.
.
.
.
2.36
6
2.36
8
2.36
8
2.36
.
.
2.36
2
2
2
7
2
10
2
9
2
2
.
2
.
.
1.7
8
1.7
12
1.7
10
1.7
.
.
1.7
.
1.6
.
9
1.6
.
.
.
.
1.6
.
.
1.4
1.4
1.4
10
1.4
14
1.4
12
1.4
.
1.4
1.4
.
1.25
.
11
1.25
.
.
.
.
1.25
.
.
.
.
1.18
12
1.18
16
1.18
14
1.18
.
.
1.18
1
1
1
13
1
18
1
16
1
1
.
1
.
.
0.85
14
0.85
20
0.85
20
0.85
.
.
0.85
.
0.8
.
15
0.8
.
.
.
.
0.8
.
.
.
.
.
16
0.75
.
.
.
.
.
.
.
0.71
0.71
0.71
17
0.71
25
0.71
24
0.71
.
0.71
0.71
.
0.63
.
18
0.63
.
.
.
.
0.63
.
.
.
.
0.6
19
0.6
30
0.6
28
0.6
.
.
0.6
0.5
0.5
0.5
20
0.5
35
0.5
32
0.5
0.5
.
0.5

UNI 2321/2332 = Italian series
ASTM E 11-70 = U.S. series
DIN 4148 = German series
NFx11-501 = French series
BS 410 = English series

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