This is photo of ortofon quintet black. I used microscope to take it and angle meter iOS app to measure the angle. Can I trust this measurement ?
This SRA measurement is only valid when the needle is in the groove and measured relatively to the record surface and when the contact line (depending on its shape) of the diamond is equivalent to its vertical symmetry line.
Furthermore the exact situation would be when a record is playing, but this ~0,1-0,5 deg? difference must either be guessed or ignored usually.
I can’t tell from the pic. Here is a u-tube video, look at 37:00 and 42:12, and see if that makes sense to you. HTH.
Could you provide the link please ?