Cartridge protractor- the best?

Your ears. Spend a day or two aligning the cartridge and adjusting the arm and phono stage and you will find the best possible setting. Or you can spend $700 on something sold here, spend an hour and possibly get the second best.
Your choice.

Thanks Inna, but surely you don't mount your cartridge by "eye-balling" it? I agree, final tweeks can be done by ear, but I would like to be in the ballpark to start with. I purchased the Rega because I do not really want to fiddle with setup, would rather play some records! Anyone else with a recommendation?

Pick youself up a Mobile Fidelity Geo Disk ( around $50 ) ...Very simple to use and will get you close enough to play and enjoy..You can tinker more using your ears for final adjustments......