Equivalency between US and UK degrees?

What is the equivalency between US and UK masters' and doctorate degrees?  I will be applying to graduate schools in the fall, and I am very interested in going to school in Scotland.

Thank you!

They should be exactly the same. A UK masters = a US masters and UK PhD = a US PhD.

It's really only US high school diplomas and associates/bachelors degrees that will have different equivalencies in the UK (although US bachelors degrees should be classed as the same as UK bachelors).