Reflections on a Measurement of the Gravitational Constant Using a Beam   Balance and 13 Tons of Mercury
  In 2006, a final result of a measurement of the gravitational constant $G$ performed by researchers at the University of Z\"urich was published. A value of $G=6.674\,252(122)\times 10^{-11}\,\mbox{m}^3\,\mbox{kg}^{-1}\,\mbox{s}^{-2}$ was obtained after an experimental effort that lasted over one decade. Here, we briefly summarize the measurement and discuss the strengths and weaknesses of this approach. 
S. Schlamminger, R.E. Pixley, F. Nolting, J. Schurr and U. Straumann
physics.ins-det physics.class-ph