  We present a study of angle-resolved quantum oscillations of electric and
thermoelectric transport coefficients in semi-metallic WTe$_{2}$, which has the
particularity of displaying a large B$^{2}$ magneto-resistance. The Fermi
surface consists of two pairs of electron-like and hole-like pockets of equal
volumes in a "Russian doll" structure. Carrier density, Fermi energy, mobility
and the mean-free-path of the system are quantified. An additional frequency is
observed above a threshold field and attributed to magnetic breakdown across
two orbits. In contrast to all other dilute metals, the Nernst signal remains
linear in magnetic field even in the high-field ($\omega_c\tau \gg 1$) regime.
Surprisingly, none of the pockets extend across the c-axis of the first
Brillouin zone, making the system a three-dimensional metal with moderate
anisotropy in Fermi velocity yet a large anisotropy in mean-free-path.
