On Tue, 2010-11-02 at 13:39 -0700, Hang Dong wrote: 
> We are looking for a high quality calibration target (something beyond pdf
> printout pasted on a plate) like the 4x4 checkerboard shown in the pr2
> calibration page:
> http://www.ros.org/wiki/pr2_calibration/Tutorials/Calibrating%20the%20PR2
> 
> Is it possible to purchase one directly from willow garage or a distributor,
> or any hint one how to go about making one ourselves?
> 
> Thanks, 
> 
> Hang

We make ours by printing the checkerboard on a large sheet of paper then
using a spray adhesive like "Super77" to affix the paper to a piece of
cardboard or foamcore.