  We provide an analysis of the mass ratio distribution as gathered from almost
all of the 559 orbital solutions derived by Professor Roger Griffin in his long
series in the Observatory Magazine about "Spectroscopic Binary Orbits from
Photoelectric Radial Velocities". The total distribution we determine is close
to a uniform one, with a dearth of the smallest companions and an excess of
almost twins. When splitting our sample between main-sequence and red giant
primaries, however, we discover a different picture: the excess of twins is
limited to the main-sequence stars, for which it appears even more pronounced.
The mass-ratio distributions of red giants is characterised by a decline of
systems with mass ratio above 0.6 and an excess of systems with a mass ratio
around 0.25, which we attribute to post-mass transfer systems. The difference
between the two mass-ratio distributions is likely due to the different primary
masses they sample.
