  We report on a combined study of the de Haas-van Alphen effect and angle
resolved photoemission spectroscopy on single crystals of the metallic
delafossite PdRhO$_2$ rounded off by \textit{ab initio} band structure
calculations. A high sensitivity torque magnetometry setup with SQUID readout
and synchrotron-based photoemission with a light spot size of
$~50\,\mu\mathrm{m}$ enabled high resolution data to be obtained from samples
as small as $150\times100\times20\,(\mu\mathrm{m})^3$. The Fermi surface shape
is nearly cylindrical with a rounded hexagonal cross section enclosing a
Luttinger volume of 1.00(1) electrons per formula unit.
