Seriously - This is left from yet another old project. It is a brown wedge, hex nut tightens to fix the wedge in place once aligned. I say it's from the 1960's because I saw it in a 1965 S&T telescope ad for Celestron's 16" SCT (!!). I am about the third owner, so no, I don't have a 16" Celestron SCT. Bottom edge is a bit beat up but it will fit in an 8" diameter, 0.125" thickness pipe for a homemade pier.
No idea what it's worth, so please feel free to make me an offer. Also please feel free to e-mail me with any questions.