  In some extra dimension theories with a TeV fundamental Planck scale, black
holes could be produced in future collider experiments. Although cross sections
can be large, measuring the model parameters is difficult due to the many
theoretical uncertainties. Here we discuss those uncertainties and then we
study the experimental characteristics of black hole production and decay at a
typical detector using the ATLAS detector as a guide. We present a new
technique for measuring the temperature of black holes that applies to many
models. We apply this technique to a test case with four extra dimensions and,
using an estimate of the parton-level production cross section error of 20%,
determine the Planck mass to 15% and the number of extra dimensions to +-0.75.
