the grinder that Bill posted is great for the gaggia as is the dualit.
Neither grind fine enough for larger machines with higher pressure though. [Coffee ground for a 28 second pour on Hippys Bezzera would give you about 1/4 of an espresso in the same time on Gaggia classic]
The options seem to be [thanks bombcup]
2nd hand Mazzer mini [about £170 on the bay don't come up that often]
the grinder that Bill posted is great for the gaggia as is the dualit.
Neither grind fine enough for larger machines with higher pressure though. [Coffee ground for a 28 second pour on Hippys Bezzera would give you about 1/4 of an espresso in the same time on Gaggia classic]
The options seem to be [thanks bombcup]
2nd hand Mazzer mini [about £170 on the bay don't come up that often]
Rancilio Rocky non doser [about £230 new]
or an Iberital MC2 [£110 new]