Yes, Mercedes calls for a dial indicator. Other manufacturers usually have a torque spec for the nut. The last time I did one was when I had the catastrophic rotor failure on my 240D. The "brim" separated from the "hat" when I nailed the brakes hard at about 70. So, I had to put a new rotor on. I did this in one of the shops at work, but it was after hours, so I couldn't borrow any tools and had to go by feel. I'm pretty sure I went a little too tight, since the car started pulling to that side slightly, but that's diminishing and everything seems ok 4,000 miles later.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.