Meant to post this a while ago. I got this fret rocker and straight edge off of eBay a couple weeks ago:
Guitar Neck Straight Edge Notched Luthiers Tool | eBay
Guitar Fret Rocker Level Tool Luthiers Tool | eBay
They're great, and a lot cheaper than the Stewmac counterparts.
MIA too. I'm going to pick up the set of 4 and the rocker methinks.