Imperial Gauge	Imperial in mm	Metric Sheet mm
10	3.25	3.0
12	2.64	2.5
14	2.03	2.0
16	1.63	1.5
18	1.22	1.2
20	0.91	0.9
22	0.71	0.7
24	0.56	0.6
26	0.46	0.5

For metric conversions go to a unit starting with -
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