Very simple breakout board without so much as pullup resistors, just breaking out all 5 pins to a pin header. The PCB features enlarged holes to fit generic encoders.

Blog post: http://smokedprojects.blogspot.com/2013 ... akout.html (http://smokedprojects.blogspot.com/2013/12/12mm-rotary-encoder-breakout.html)
Github repo: https://github.com/t0mpr1c3/rotary-encoder-breakout (https://github.com/t0mpr1c3/rotary-encoder-breakout)
t0mpr1c3;
thanks for that.
Now I can use the one I have.
I was unable to find a footprint for it.
Mick M
The package was originally from the DP library. I didn't get the adjustment quite right for the encoders I have because they don't sit perfectly flat on the board. The 2 larger holes that stabilize the case may need to be closer together. After soldering it all looks OK.
I must say, if I had realized at the outset that you could buy a rotary encoder module for $1.49 shipped (http://http://www.buyincoins.com/item/40435.html) I wouldn't have bothered. I don't really need 10 of them at the moment.