1/2 inch is 12.7mm
Indian Railways uses four gauges: 1. 1,676 mm (5 ft 6 in) Broad Gauge (BG), which is also called Indian gauge, 2. 1,000 mm (3 ft 3 3⁄8 in) metre gauge (MG), 3. 762 mm (2 ft 6 in) Narrow Gauge (NG), and 4. 610 mm (2 ft) Narrow Gauge. Source: - TravelKhana.com
A little over 1".
0.7 mm = 21 gauge- Google it
The closest would be 18 gauge which is 1.27 mm
18gauge is about 1.02mm.
Probably 25 gauge, which is .556 mm thick. However, 26 gauge is close too, it is .478 mm thick.
1.59 mm
0.0508 mm
what is 9gauge in mm thickness
.953 mm (USG)
17 gauge = 1.422 mm