hello again handi, using a 3dtaster on a lathe requires to change the jaws ( or collet, etc), and this is time consuming ... inside a mill is enough to go mdi T6 M6 ( < 5 seconds ); this is why, for lathes, i recomand a zero setter, because is much faster to use it
on mills, i use the 3d taster with 2 z offsets :
... z offset 1 : long tongue and short tongue, both of them showing 0 ( for absolute measurements )
... z offset 2 : long tongue showing a random value, after rotating only a few degress ( relative measurement )
of course, is much faster to reach z_offset_2 position, because you don't have to turn the dial all the way towards 0
perhaps you already know that a 3d taster can be used for relative measurement ( like a dial indicator, except that is not ok to slide the 3d taster, thus only for punctual use ), and also for absolute measurement ( when both tongues are showing 0 )
i preffer analogue constructions, because they are more intuitive, the brain being able to estimate more easy the angular movement of the tongue
for fast tir adjustement, there are models with 2 adjustment screws just before the palpator, like shown in attached image; is much faster to align those, comparing to the ones that have 4 screws at the top ... the problem is that an aligned renishaw or 3d taster, may get disaligned durring a tool change sequence; i have met persons that don't wanna waste time to re-aling their probes, so they are always clamping & unclamping by hand, so the toolholder never goes into the magazine; when it is not used, it is being kept inside a box, near the machine ... the way arround is to periodically check swing arm alignment, and also to lower the atc speeds for such toolholders that contain measuring equipment, but even so, is hard to keep a low tir for a long period of time, when the toolholder is subject to shocks .. this is why is needed a fast & consistent tir adjusting procedure, and those models with 2 screws near the palpator are easier&faster to align, compared to those with 4 screws at top
sorry if there is 2 much info / kindly