Cable/Wire Measuring Instrument(s)

I suspect the cable from my stylus to the phono stage is compromised. My left channel is about 1db+ loader than the right so it throws off the soundstage to the left. I have gone through the elimination process and determined the fault lies between the cartridge pins and the input of the phono stage.

I would like to know what instrument(s) I would need to measure the wires.
What will I be measuring for and what should be the values (tolerances) I should be looking for?

I would also like to know who would stock high quality cartridge pin clips in the GTA.

FYI. I have the Origin Live RB250 with their complete rewire.

Thanks for your help.