Next time I'm in the garage, I'll measure it, but it looks to be an almost standard size component. I have it sitting atop my Kenwood KT8005 tuner, and it is just a tad smaller in width and depth.
I'm going to make some more brass hocky puck feet for it (3), should be beautiful. Here's a picture of some brass pucks atop a Michaura M665 speaker.
There's a marine salvage place near me, and once in a while they have a brass prop driveshaft lying around - I have them cut me some slices, shine them up and put a bit of felt on them so they don't do any damage.
