I always have a business card and credit card, I pull one out and run it vertical, cue down on the inner grooves, look which letter aligns to top of armtube near the headshell, do same at outer grooves, easy way to measure.
Parallel? How do you set the VTA?
Silly question, but how do you guys determine whether your tonearm is parallel to the record surface? I had my tonearm set up happily for months, but recently started messing around with the cartridge alignment and the VTA, and I'll be damned, but the folded index card method gets me nowhere now. Even with adjustments I keep getting the same visual effect. Happily my ear tells me when the setting is off, but as a base, how do you determine conclusively your tonearm is parallel? For reference, I have a VPI Classic. Thanks.