Air wrench with a calibrated torque?

http://www.ferret.com.au/articles/d4/0c01bed4.asp looks like just the ticket for a "clicker" air wrench. Up to 48,600 Nm, which is slightly more than most bicycling tasks need.

On second thought... I think I will just going to stick with two clickers (1/2" and 3/8") for my wrenching needs...