What gets to me about z + v rods is that nearly all the other common carvings are of phsical objects so why these two metaaphysic sigils........
Personally I like the idea of them as surveyors tools the v being a groma (tool for setting out - which in the Etruscan tradition one used after finding the local omphalos.....and also used in boundary disputes.........I think the groma stuff is in some Devereaux)
The z being the theaodolite arrangement of plumb bobs from a t or cross piece on the end of a staff.
brian
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