Wire Gauges: SWG, AWG etc.

Thickness of metals is measured in 'wire gauge'

Note:American Wire Gauge (AWG) is the same as 'Brown & Sharpe'.

There are other gauges about, such as Stubs', Stubs' Steel, US standard plate, etc. etc.

Wire Gauges - diameters in inches

Gauge	Standard Wire Gauge SWG	Birmingham Wire Gauge BWG	Brown and Sharp B & S (AWG)	Washburn and Moen W & M
7/0	0.5000
6/0	0.464
5/0	0.432
4/0	0.400	0.454	0.4600	0.393
3/0	0.372	0.425	0.40964	0.362
2/0	0.348	0.380	0.3648	0.331
1/0 *	0.324	0.340	0.32495	0.307
1	0.300	0.300	0.2893	0.283
2	0.276	0.284	0.25763	0.263
3	0.252	0.259	0.22942	0.244
4	0.232	0.238	0.20431	0.225
5	0.212	0.220	0.18194	0.207
6	0.192	0.203	0.16202	0.192
7	0.176	0.180	0.14428	0.177
8	0.160	0.165	0.12849	0.162
9	0.144	0.148	0.11443	0.148
10	0.128	0.134	0.10189	0.135
11	0.116	0.120	0.09074	0.120
12	0.104	0.109	0.08081	0.105
13	0.092	0.095	0.07196	0.092
14	0.080	0.083	0.06408	0.080
15	0.072	0.072	0.05707	0.072
16	0.064	0.065	0.05082	0.063
17	0.056	0.058	0.04526	0.054
18	0.048	0.049	0.0403	0.047
19	0.040	0.042	0.03589	0.041
20	0.036	0.035	0.03196	0.035
21	0.032	0.032	0.02846	0.032
22	0.028	0.028	0.025347	0.028
23	0.024	0.025	0.022571	0.025
24	0.022	0.022	0.0201	0.023
25	0.020	0.020	0.0179	0.020
26	0.018	0.018	0.01594	0.018
27	0.0164	0.016	0.014195	0.017
28	0.0148	0.014	0.012641	0.016
29	0.0136	0.013	0.011257	0.015
30	0.0124	0.012	0.010025	0.014
31	0.0116	0.010	0.008928	0.0132
32	0.0108	0.009	0.00795	0.0128
33	0.0100	0.008	0.00708	0.0118
34	0.0092	0.007	0.0063	0.0104
35	0.0084	0.005	0.00561	0.0095
36	0.0076	0.004	0.0050	0.0090
37	0.0068		0.00445	0.0085
38	0.0060		0.003965	0.0080
39	0.0052		0.003531	0.0075
40	0.0048		0.003144	0.0070
41	0.0044			0.0066
42	0.0040			0.0062
43	0.0036			0.0060
44	0.0032			0.0058
45	0.0028			0.0055
46	0.0024			0.0052
47	0.0020			0.0050
48	0.0016			0.0048
49	0.0012			0.0046
50	0.0010			0.0044

* 1/0 is also known as just 0