Hi Mark, yup I expect to add some tools for this in v2.

There will probably be a few different types of measurement things, probably the first one that will happen here shortly is a kind of "object details" type dialog that will list some information about an object like radius of a circle, bounding dimensions, etc...

I'm going to make that part of an object properties panel that lets you get at some properties of the currently selected objects, I'm currently working on this area right now.

- Michael