I thought that it might be quite fun, in the post-Easter euphoria, to give you a little challenge : something to perplex you at least a little.
So, from my collection of curious images, here is something for you to consider - and what I want to know is : what is it, and for what (purely religious) purpose is it used ?
(As a clue, it is not something you'll find in a Parish Church - at least, I sincerely hope not - though nothing would surprise me in the Sacristy of the London Oratory !)
Because I imagine you'd all like to see the answer, and because I can't provide the link until this (Wednesday) evening from my other computer, I shall leave you guessing until then . . .