Chris Tarling
Yellow Hound
May I ask where you got your TT level @Chris Tarling
I've looked but I'm afraid I can't find any record of my purchase.
Sorry.
I know it wasn't inexpensive, such that it took me a while to decide to buy it.
It is simply a block of acrylic with the bubble levels inserted and an accurate hole for the spindle. Mine does seem very well made though I confess to not checking its accuracy.
Closest I could find is this, which is stupidly expensive (I definitely didn't spend this much!) and lacks the spindle hole: https://www.audioemotion.co.uk/acoustic-signature-2-way-bubble-level-18098-p.asp