Your Perfect Ring size
Ring diameter's or ring circumferences are made to an accuracy of 1/10th of a mm.
You just can't measure that kind of accuracy at home with a ruler. Please don't try.
A NEW EXPERIENCE
Don't know your ring size?Simply pop into your local jeweller (or me) to get sized accurately.That is it, there is no other option.
DON'T use one of those horrid plastic ring gauges, a printed template or any other form of DIY ring sizing.
Plastic ring gauges are just rubbish plain and simple. If a company sends you one then they are more interested in trying to get your sale than they are the best fit. Their interest is self serving. No serious jeweller would consider these.
These ring sizers, affectionately known as "Jailor's Keys" are awful.
They are too thin and too cumbersome to use.
What you want is an individual ring,, that matches the width of ring that you are wishing to buy
A RING SET
Your finger is not one ring size.
It might be a size M for a 2mm wide ring, an N for a 6mm wide ring and you might be a O for a 10mm wide ring.
You therefore need to get measured with a matching ring to the width you are after.
A set of ring sizers like these are perfect.
SHARING OUR KNOWLEDGE
So to summarise.
For a Perfect ring size.
Option ONE : Visit a local jeweller or me
Option TWO : There is no option two.Hope that helps