Name:Grain Hardness Meter Model:GWJ-1/GWJ-2 Product description: GWJ series Grain Hardness Meter measures hardness of granular good such as rice, wheat, ect. Characteristic: 1. Easy to operate, direct reading, high accuracy, elegant appearance. 2. Pressure head is made of stainless steel, which increases the service life. 3. Has two types: Pointer and Digital LED.