Not sure what that's for: baptising premature babies maybe?
font and pillar piscina (dont titter at the back) tis for the priest to get the sploshing water, wash the chalice/salver or his grubby fingers as appropriate.
they are usually separate and sometimes the piscina is next to the pulpit (to reduce fingermarks on the bible) and sometimes at the side of the chancel.
piscina can sometimes be found in monastic libraries/scriptoria for de inking fingers and keeping books clean in a practical and "holy"sense and occasionally in monastic dining rooms for ritual use before grace (and to rinse the garderner's sluggy paws before dinner).
i spose they have a practical and symbolic role that has parallels with the jewish ritual bath and the scrub down before entering the mosque.
iirc posh fonts such as that one were quite popular in norman gothic churches but few survived the reformation/iconoclasts with the fancy bits attached so the hood is probably either a replacement, foreign or a very rare survivor.
i have never seen the 2 bowl combo in a uk church but they are fairly common in europe.
it would make a pretty funky bird feeder and water bowl combo
||It's in Brittany. They go in for OTT church architecture.|