It's actually 1.0mm and yes it is so close to 18g it isn't funny.
The nearest is 18 gauge, which is 1.02 mms
Probably 19 gauge, which is 1.067 mm
1 mm = 4/100 inches
19 gauge steel is 1.11 mm thick and 20 gauge is .953 mm thick.
1 mm = 4/100 inches
12 gauge is thicker than 14 gauge.
2.5mm=.098 of an inch or 63/640 ( that is a fraction) Direct Conversion Formula 2.5 mm* 1 in 25.4 mm = 0.09842519685 in
Probably not, but it depends on the circumstances. Generally speaking, one can say that twenty-gauge steel sheets (meaning that 20 sheets of 20ga steel have a thickness of one inch) have a thickness of 0,8 mm; this is the same thickness as used in many automobiles.18 ga steel sheets, on the other hand, have a thickness of 1 mm. 18 ga steel is 33% heavier, 60% stronger and has a 60% longer life than 20ga steel.
Convert to the same units and the difference can be found: 1 cm = 10 mm → 2 cm = 2 × 10 mm = 20 mm → 2 cm - 18 mm = 20mm - 18 mm = 2mm 2 cm is 2 mm longer than 18 mm Alternatively, as 10 mm = 1 cm, 2 mm = 2 ÷ 10 cm = 0.2 cm, it can be expressed as 2 cm is 0.2 cm longer than 18 mm.
I assume that you are speaking about firearms in general and shotguns in particular. 24 guage is almost unknown in the United States and marginally popular in Europe. As usually configured it is .57 calibre English and 14.7mm metric. Once a popular small game load.
0.7087 in, algebraic steps below: 18 mm*1 cm 10 mm*1 in 2.54 cm=0.7086614173 in Direct Conversion Formula 18 mm* 1 in 25.4 mm = 0.7086614173 in
1 gauge is 1/1000 of an inch or 1mil (not to be mistaken with mm). 1200ga is roughly 2.5 mm