Super clean example of this classic home budget espresso grinder.  
 
If you don't have room (or have unappreciative roommate issues) for a vintage commercial grinder, Rockys are adequate options until you do!
 
We've "modded" the switch on this to eliminate the extra "pulse" switch Rancilio put on, but is a pain in the ass to operate while holding a portafilter up to the spout.  Now it's either "on" or it's "off."
 
This one is "doserless."