One coffee refractometer used as a tool for measuring extractions of coffee to assist with creating the most consistent highest quality brewing as well as a critical tool for coffee roasting.
I purchased it directly from VST and has been used in a non-commercial setting for barista competitions. Usage would average 20 readings a year for 4 years. Never had a problem and always cleaned and packed away between use.
Comes with the pipettes, filters, and cleaning material remaining from initial purchase.
Local pickup or meeting is possible.