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Soil hardness meter Soil hardness meter Product Details: Instructions: The soil hardness meter is to use the theoretical value pressure gauge Kg/Cm2, directly measure the soil hardness. For the soil permeability of water, it is very conveniently and accurately to use this hardness meter for ventilation and large machinery operating to nature of the soil investigation and study Determination of soil hardness: 1. First to measure the entire surface of the soil level, then insert all the top part of meter into the soil until (opening) part. 2. Vertical-to pull out the soil hardness, and read the instructions of the hardness value from the table. 3. Finished reading measured values, driven rotary-knob, so that instruction sheet to zero. 4. If side internal attach soil will make measurements into not correct, anti-clockwise rotation (opening) of the sleeve to remove this round, please after cleaning up, shift to the fixed position, then can be measured again. Soil hardness meter technical parameters: Hardness instructs range: 0 40 mm 0 500 Kg/Cm2