I don't know my bike's stock handlebar diameter. I am going to upgrade some parts, for handlebar I tried to read any information written on it but there is only it's brand name. Can you help me please?
EDIT: Sorry for my poor English. I am trying to mean the "diameter" by "width", like the cylinder here http://www.nordenexpress.com/images/packaging.gif (For example I thought- the drop bar I want to buy has a "length" of 44cm, not width. Sorry again)
My bike has a flat handlebar and I am willing to replace it with a drop bar. Drop bars I've found on online bike stores are mostly 31.8mm. I don't know how to measure the diameter of my flat bar, I don't have calipers. Even if I had calipers, I don't know where to measure; the middle of the bar is thicker, ends are thinner.
I am not sure about where is 31.8mm. Just thought maybe it is the diameter of the bar, am I right?
If a handlebar (like mine) is said to be 25.4, can you tell how we get the result 25.4? Measure the diameter? Radius? Periphery?