How big is a taus?

Five 19th-century taus examples in museums measure about 97 to 118 cm overall. They measure 103.5 cm at the V&A, 115.5 cm at the Met and 118 cm in Edinburgh and Würzburg. The resonator is small and shallow: 166 mm wide on the Edinburgh example, and 13 to 15 cm deep on the V&A and Met instruments.