Schroder 2 Arm.....High, Med. or Low Mass?

I need a Tonearm & I am looking at the Schroder 2
with the Pertinex wand.
It looks like It is about a 9 inch Arm.

I would really like to know what the Mass is.
I have read that my cartridge ( Musicmaker III ) matches
best with a LOW mass Arm.

Anybody have a clue?