How Much Abuse can a Cartridge take?

While measuring the speed of my tt with a KAB strobe disc. I had the disc on top of a record, then had the arm down on the record that was showing (outer edge) to compensate for stylus drag.

Well would you know it, the idiot that I am, I forgot to pick up the arm in time and the stylus was dragging against the edge of the strobe disc and it was skipping on that part of the record(sounded like a "broken record")over and over again. This happened for about half a minute. Also very emabarassing is the fact that I did it twice (doh!).

The cartridge sounds good, but could this be enough to cause some sort of damage?

Cartridge is a Benz Glider

I'm really pissed at myself and need some sort of reasurement that I didn't total the thing.

Thanks guys and my appologies if this a stupid post but I had no where else to turn.

AGL