how about a profile of svg? Take one of the mobile svg modules and cut out any excess.
Or, when discussing making the data available...
GRDDL-like approach with following method:
Microformat reference to XML datasource for the html page. Microformat reference to XSLT for formating the page. Microformat reference to expected display area.
Thus the expected display area can be scaled depending on available scale area.
Allow user to choose straight URI display in configuration and on any bookmark in case display does not adequately meet user needs.