After a few false starts (i.e. order A3 over net to be contacted and told they were sold out and would I like a D3?) I found somewhere with stock of A3s. Had a chat with the guy who told me he'd had a number of cavers on to him; I explained the DistoX concept which interested him. He asked if we did it for a job...if only! Nice guy.
Anyway, ordered Wednesday afternoon (?219 inc delivery) and received goodies Thursday morning via UPS. Can't complain at that!
He told me he'd bought the last ones from Leica and could get no more, and had a few left.
http://www.merlinlazer.com/
I checked the D3 specs; it appears to have a clino of some sort built in, but not sure of accuracy etc. Obviously the X conversion won't work with the D3, but if anyone wants a half way house, ie use old fashioned compass but digi tape and clino, might be of interest? Not sure why, but you never know, it might suit somebody's purpose.
*Have just checked; it appears to do only up to 45 degrees each side of horizontal, so maybe not much use!
Cheers,
Dave