Right hand referring to which side of the grinder the lever is on while one is facing it.
Found in many of the more modern (post 2002) Compak grinder models, such as:
COMPAK K3 ELITE
COMPAK K6-K6 TELESCOPIC
COMPAK K6 SILENZIO-K6 SILENZIO
COMPAK K6 BARISTA PROFESSIONAL
COMPAK K8 SILENZIO-K8 SILENZIO
COMPAK K10 CONIC WB
COMPAK K10 CONIC-K10 CONIC
COMPAK DOSING COMPARTMENT D1-D2
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.