I used a typical UITableViewController subclass to set up my page. The grouped UITableViews have different margins on iPad and iPhone. This causes my tableHeaderView to be maligned on at least one of the devices. How do I programmatically get the margin width so I can perfectly align the header to the left of the table? I know that I can measure with Photoshop and hardcode numbers in an if/else, but I'd like a more robust solution.
iPhone

iPad
