If your using armboards and the armboard is able to be swapped in and out in the EXACT same location than you can swap tonearms with the armboards and preserve your setup adjustments.
Tonearms with different spindle to pivot differences will not mount in the same precise location as has been pointed out. You will need a different armboard for each tonearm.
I designed a system that is precision machined out of aluminum, the main armboard is 3/4" thick aluminum plate that takes armboard inserts made from 1/4" aluminum plate that locate very precisely. I can swap tonearms complete with cartridges and preserve the setup.
BillWojo
Tonearms with different spindle to pivot differences will not mount in the same precise location as has been pointed out. You will need a different armboard for each tonearm.
I designed a system that is precision machined out of aluminum, the main armboard is 3/4" thick aluminum plate that takes armboard inserts made from 1/4" aluminum plate that locate very precisely. I can swap tonearms complete with cartridges and preserve the setup.
BillWojo