Soil Portable Hardness Tester

 Detailed Soil Portable Hardness Tester Description:
1. Used to test the soil hardness 
2. With driven-rotary knob 
3. With the function of permeability of water 

Test method: 
1. Level the measuring soil surface, then insert top part of instrument into the soil until (opening) part. 
2. Vertically pull out the soil hardness meter and read the hardness indicating value of the meter. 
After finished reading the measured value, drive rotary-knob, make the indicating meter to zero. 
3. Soil attached to the inside of measuring head will make the measurements incorrect. Please clockwise rotate (opening) part, take down round sleeve, rotate to the fixed position after cleaning up, then can measure again. 
4. Hardness indication range: 0-40mm, 0-500kg/cm²