\begin{table}%t6 \caption {\label{tab:catalogue}Eclipsing cataclysmic variables for which masses and radii of one or both components has been measured accurately and precisely. } $$ {\begin{tabular}{l c r@{~$\pm$~}l r@{~$\pm$~}l r@{~$\pm$~}l r@{~$\pm$~}l r@{~$\pm$~}l l} \hline\hline Name&Orbital &\mc{Mass ratio}&\mc{White dwarf} &\mc{White dwarf} &\mc{Secondary} &\mc{Secondary} &References\\ &period (d) &\mc{ } &\mc{mass (\Msun)}&\mc{radius (\Rsun)}&\mc{mass (\Msun)}&\mc{radius (\Rsun)}& \\ \hline IP~Peg & 0.158206 & 0.48 & 0.01 & 1.16 & 0.02 &0.0064 & 0.0004& 0.55 & 0.02 & 0.47 & 0.01 & 1, 2 \\ GY~Cnc & 0.175442 & 0.387&0.031 & 0.99 & 0.12 & \mc{ } & 0.38 & 0.06 & \mc{0.44} & 3, 4, 5 \\ U~Gem & 0.176906 & 0.362&0.010 & 1.14 & 0.07 &0.0067 & 0.0008& 0.41 & 0.02 & 0.43 & 0.06 & 6, 7, 8, 9\\ SDSS~J1006$+$2337& 0.185913 & 0.51 & 0.08 & 0.78 & 0.12 &0.016 & 0.006 & 0.40 & 0.10 & 0.466 & 0.036& This work \\ DQ~Her & 0.193621 & 0.62 & 0.05 & 0.60 & 0.07 & \mc{ } & 0.40 & 0.05 & 0.49 & 0.02 & 10, 11 \\ EX~Dra & 0.209937 & 0.75 & 0.01 & 0.75 & 0.02 &0.013 & 0.001 & 0.56 & 0.02 & 0.57 & 0.02 & 12, 13, 14\\ V347~Pup & 0.231936 & 0.83 & 0.05 & 0.63 & 0.04 & \mc{ } & 0.52 & 0.06 & 0.60 & 0.02 & 15 \\ EM~Cyg & 0.290909 & 0.88 & 0.05 & 1.13 & 0.08 & \mc{ } & 0.99 & 0.12 & 0.87 & 0.07 & 15 \\ AC~Cnc & 0.300477 & 1.02 & 0.04 & 0.76 & 0.03 & \mc{ } & 0.77 & 0.05 & \mc{0.83} & 16 \\ V363~Aur & 0.321242 & 1.17 & 0.07 & 0.90 & 0.06 & \mc{ } & 1.06 & 0.11 & \mc{0.90} & 16 \\ \hline \end{tabular}} $$ \par \smallskip Those secondary radii without errorbars are not available from the original reference so have instead been calculated assuming Roche geometry. \newline {References:} (1) \citet{Ribeiro+07aa}; (2) Copperwheat et~al.\ in preparation; (3) \citet{Gansicke+00aa}; (4) \citet{Thorstensen00pasp}; (5) \citet{Feline+05mn}; (6) \citet{Marsh+90apj}; (7) \citet{LongGilliland99apj}; (8) \citet{Naylor++05mn}; (9) \citet{Echevarria++07aj}; (10) \citet{Horne++93apj}; (11) \citet{Wood+05apj}; (12) \citet{Fiedler++97aa}; (13) \citet{Baptista++00mn}; (14) \citet{Baptista++01mn}; (15) \citet{Thoroughgood+05mn}; (16)~\citet{Thoroughgood+04mn}. \end{table}