I'd be looking at doing a dimensioned sketch, or even a drawing, of the Victa needle. Sure, the tolerances may need to be guesstimated, but that isn't too difficult.
With that data, it should be possible to find a manufacturer who has a list of their needles with dimensions, as well as what they will fit.
I could draw up the needle on SolidWorks but I only have aftermarket needles on hand. Would that do?
