ega.
The indexing is absolutely basic.
Four dowel holes in the base, one dowel hole through the laminations of the toolpost, (The other three holes are occupied by Allen bolts that clamp the laminations together. )
Spring loading the dowel has been on the Round Tuit for many years- Don't hold your breath!
Unclamp the toolpost, lift dowel, index, refit dowel, clamp toolpost, cut.
It carries chamfering tools for front and back chamfering, and of course a parting tool; all mounted inverted.
It locates against the back of the Cross Slide with two dowels. It is clamped to the Cross Slide by a long T nut carrying two M8 studs.
This is why my Centre Height Gauge has two blades. One for tools in the Front post, and then other for tools in the Back one.
Whether the article ever appears would depend on Neil, and then the MTM graphics folk being able to change my drawings into something printable.
It must be the only time that I have ever made drawings, I usually work off a sketch on the back of an envelope, as I make it up as it goes along!
Howard