cartridge mounting

nice arm

SPECIFICATIONS

I do not find the two null points specs, which length is your arm? It may not matter, presumably your dealer set it correctly, and null points come in 3 main varieties

The three advertized alignments and their null points are:

Baerwald 66 and 120.9
Loefgren 70.3 and 116.6
Stevenson 60.325 and 117.42

http://www.dvautier.com/nullpoint/null.htm

they make and sell arm specific protractors

but

a universal protractor is good, you just get 'your arm's specs and make a note of them

thank you ALL...arm is already mounted, and fixed.  As noted, the headshell is slotted, so besides allowing adjustment of ZENITH, the distance from the pivot to the stylus can be changed by about 2 cm, plus/minus....this is what I remain confused about

I realized after posting that if you change the usually fixed headshell offset angle. Which changes effective length, you might compensate for that by moving the pivot with respect to the spindle. (Effective length = pivot to spindle + stylus overhang.) But since every cartridge will have a different zenith error, that is not practical, unless you had an SME or Dynavector tonearm with its moving pivot optional accessory. I’d say work it out with a good protractor or just twist the cartridge body only.

@elliottbnewcombjr 

All good reasons to go for a tangential tracking arm!