Service manual

ENWW 2 Installation 45
Paper weight equivalence table
Use this table to determine approximate equivalent points in weight specifications other than
U.S. bond weight. For example, to determine the equivalent of 20-lb U.S. bond-weight paper in
U.S. cover-weight paper, locate the bond weight (in row 3, second column) and scan across the
row to the cover weight (in the fourth column). The equivalent is 28-b media. Shaded areas
indicate a standard weight for that grade.
Metric Sizes
For metric-size paper (A4), use this method to determine basis weight:
Take 16 sheets of A4 paper and weigh them. One square meter of paper contains approximately
16 A4 size sheets. Compare this weight to the appropriate weight in the preceding table.
U.S. post-
card
thick-
ness*
(mm)
U.S. bond
weight
(lb)
U.S. text/
book
weight
(lb)
U.S.
cover
weight
(lb)
U.S.
bristol
weight
(lb)
U.S. index
weight
(lb)
U.S. tag
weight
(lb)
Europe
metric
weight (g/
m2)
Japan
metric
weight (g/
m2)
1 16 41 22 27 33 37 60 60
2 17 43 24 29 35 39 64
64
3
20 50 28 34 42 46 75 75
4 21 54 30 36 44 49
80 80
5 22 56 31 38 46 51 81
81
6
24 60 33 41 50 55 90 90
7 27 68 37 45 55 61
100 100
8
28 70 39 49 58 65 105 105
9
32 80 44 55 67 74 120 120
10 34 86 47 58 71 79 128
128
11
36 90 50 62 75 83 135 135
12
.18 39 100 55 67 82 91 148 148
13 .19 42 107 58 72 87 97 157
157
14
.20 43 110 60 74 90 100 163 163
15 .23 47 119
65 80 97 108 176 176
16 53 134 74 90
110 122 199 199
* The U.S. postcard measurements are approximate. Use for reference only.