This is a very dinky, cute, exquisitely-made little pan but I was disappointed in the minute size. I know what 7cm looks like so I expected it to be small but the technical details state that the capacity is 0.5L (500ml). Therefore I wasn't sure if the 7cm size was perhaps the radius rather than diameter of the pan, or if it would be taller in height. I've also seen similar mini-pans on TV cookery programmes which, while small, are serviceable (after the event, I now assume these others must have been at least 9cm or 10cm).
With the 500ml capacity being stated, I was led to believe the pan would be big enough to heat single portions of shop-bought sauces (a maximum of around 250ml) to save using a much larger pan thus reducing washing-up and extending the number of usable pans I have at storage minimal space. Instead I've measured the capacity and found it to be only 130ml and that's full to the brim, when obviously you wouldn't have that amount of liquid in the pan in practice as it would spill everywhere. I was also hoping to use the pan to make single portions of white/ cheese sauce but it's far too small for that. So far I've only been able to use it as a tiny bain-marie (with small Pyrex container inside) for melting a little chocolate as a dessert topping, and to heat a small amount of alcohol for a hot toddy.
I made the decision not to send it back as I knew it would be used occasionally, and it will no doubt last a lifetime (plus keeping it saved any hassle) but I was ultimately disappointed when it wasn't able to be used for the purposes I bought it for...and it's not exactly cheap! If it's a mega-tiny pan you're looking for, then you will be delighted but otherwise I feel it's just not practical for most purposes, for the average cook at least.