Interesting solution... I couldn't bring myself to spend nearly 20 quid on a vernier caliper for measuring the tube diameters on my frame, but I came across one in the pound shop.
Obviously it can't be relied upon for an accurate measurement, but it DOES generate an accurate reproduction that I can measure with a more accurate ruler.
Bearing in mind that there tends to be a bunch of set sizes for things like front mechs, headsets etc... it's a reasonable way to find out which one you need.
Obviously it can't be relied upon for an accurate measurement, but it DOES generate an accurate reproduction that I can measure with a more accurate ruler.
Bearing in mind that there tends to be a bunch of set sizes for things like front mechs, headsets etc... it's a reasonable way to find out which one you need.