CreadurMawnOrganig has it right re how to set up a banjo bridge. FYI I play one of Tom's 'Elite' banjos and to ensure perfect intonation on every string and every fret my bridge also ends up at a jaunty angle similar to the ones in your photos.
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I've never been to Wichita, but I know a couple of fiddle players from there; they are both in a band called Knocknasheega (http://knocknasheega.com). If nothing else, go to one of their gigs and talk to them -- they may know of some sessions in that are...
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The way to check whether the bridge is set correctly is to check the intonation: for each string in turn, play the open string, then fret it at the 12th fret - the note at the 12th fret should be exactly an octave above the open string.
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