Coffee Moisture & Density Meter by Lighttells. Model MD500 — CoffeeTec
ZOEYEC MG-Pro Portable Mini Cup Grain Moisture Meter for Coffee,Cocoa,Rice,Wheat 25 Kinds Grains Moisture Tester Wiht 99 Groups Data Storage - Amazon.com
Grains Moisture Density Weight Tester Grain Moisture Meter Smart Density Tester for 24 Kinds of Grains, Hazelnut, Coffee Beans, Cocoa Beans, Rice, Wheat, Corn, Upgraded Grain Moisture Tester GM005 - Amazon.com