try this conversion chart: http://www.jewelrybynet.com/jbn_lc_body-jewelry-body-jewelry-conversion-chart.asp ..hope it helps. :)
No. The common, plain old, earring size is almost always 22 Gauge. 16 Gauge is just a bit smaller than the common piercing size of 14 Gauge. The size chart goes down in increments of two from 22 usually down into the negatives of 00 gauge, and then breaks down into diameters.
00
No
00 gauge is approximately 10 millimeters in diameter. It is commonly used for larger body piercings such as earlobes.
he has 00
00
About 20cm
The gauge is the thickness of the jewelry (Usually the thickness of the wire the jewelry is made from but may also be the diameter of a plug or eyelet). From 20 gauge to 00 gauge, the smaller the number is, the thicker the jewelry is. After 00, the diameter of body jewelry is usually measured in fractional inches A 0 or 5/16" gauge is 0.325 decimal inches or 8.251 millimeters
To get 00 gauge model engines you can go to eBay, Hattons, Model Fair, The Model Train Shop, Preloved, Craigslist, Kijiji, Gumtree and Victorian Hobby Shoppe.
Yes
The gauge is the thickness of the jewelry (Usually the thickness of the wire the jewelry is made from but may also be the diameter of a plug or eyelet). From 20 gauge to 00 gauge, the smaller the number is, the thicker the jewelry is. After 00, the diameter of body jewelry is usually measured in fractional inches A 10 Gauge is smaller than 1/8th of an inch about 2.5 millimeters in diameter!
Typically, no. You'd probably be able to go down to around 4ga-6ga. But everyone is different