TAPERS PER FOOT AND CORRESPONDING ANGLES
Computed by E. M. Willson

CHAPTER IV

DIFFERENT STANDARDS FOR WIRE GAUGES

DIFFERENT STANDARDS FOR WIRE GAUGES IN USE IN THE
UNITED STATES

Dimensions of sizes in decimal parts of an inch

.0093 .0578

.3125

I

.0098 .0710

2

.0106

.0842

3

45678

.0122 .1105

.234375

.0138 .1236

.21875

.0157

.1368

.203125

.28125 .2893
.265625 .25763
.0114 .0973 .25
.22942 .259 .2437 .252
.20431 .238 .2253 .232
.18194 .22 .2070 .212
. 16202 .203 .1920 .192
.14428
.18 .1770
.176
.12849 .165 .1620 .160
.11443 .148 .1483 .144
.10189 .134 .1350 .128
.090742 .12 .1205 .116 .188
.109375
.080808
.109 .1055
.09375 .071961 .095 .0915 .092
.078125 .064084 .083 .0800
.080 .180
.0703125 .057068 .072 .0720 .072
.0625
.05082 .065 .0625 .064
.045257 .058 .0540 .056 .172
.040303 .049 .0475 .048

.40964 .425 .3625 .372
.3648
.38
.32486 .34 .3065

.454 .3938 .400

.3310

.348

.324

O

.3 .2830

20

.044

.3210

.0375

.046

.034375

22

.048

.3474

.03125

.03589 .042 .0410 .040
.031961 .035 .0348 .036
.028462 .032 .03175 .032
.025347
.028 .0286 .028 .155
.022571 .025 .0258 .024 .153
.0201
.022 .0230
.022 .151
.0179
.02 .0204 .020 .148
.OI594 .018 .0181 .018
.014195 .016
.0173
.012641 .014 .0162

.164

19

.161

20

.157

21

22

23

24

25

.146

26

.0164 .143

27

.0149 .139

28

BIRMINGHAM GAUGE FOR SHEET BRASS, SILVER, GOLD AND ALL METALS EXCEPT STEEL AND IRON

Thick

No.

Thick

Thick

Thick

Thick

Thick

ness, No. ness, No. ness, No. ness, No. ness, No. ness,

inch

inch

inch

inch

inch

inch

GAUGES GENERALLY USED BY MILLS IN THE U. S. ROLLING SHEET IRON. (VARY SLIGHTLY FROM BIRMINGHAM GAUGE)