MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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Thanks for your message and interest in my Revolver design. In response to your request the immediate question imms which measurements... I assume all of them. That's a lot so not easy to list in a meaningful text response. Things like this are best shown in a diagram with dimensions included.
Anyway my suggestion is to download the .stl files and open them in a 3D design application. Even basic apps have ways you can measure things... take the measurements as you need them then redraw it for your project.
Hopefully this achieves what you want...