@bimasta
I can’t see a four jaws only inside the headshell look on my stock Technics SL1210mkII tonearm. This one indeed looks different compared to my Victor UA-7082. But the rest of the arms i am using in main system are all have 4 jaws inside the chuck lock (just like the drill lock) like the Victor 7045/7082.
You’re right Chakster. But the difference is inside. The "normal" lock clamps four jaws tight — like, as I said, a drill chuck, tight as you want. Part of its brilliance is that it looks normal, and accepts normal headshells which are so easy to get. No endless quest for one-of-kind headshells. And it solves many of the problems with the early SME — it should have been a prototype but became standard.
I can’t see a four jaws only inside the headshell look on my stock Technics SL1210mkII tonearm. This one indeed looks different compared to my Victor UA-7082. But the rest of the arms i am using in main system are all have 4 jaws inside the chuck lock (just like the drill lock) like the Victor 7045/7082.