The GDF321 tribrach without plummet from Leica Geosystems is a highly accurate accessory and a critical part of the measuring setup. The precise alignment of the instrument to the support area ensures complete accuracy. This new tribrach comes with <1" stiffness for excellent torsional rigidity which is a very important factor when selecting any tribrach. It is suited for high angular accuracy tasks and weighs 760 grams.