The Yamamoto-type soil hardness meter is an instrument that measures soil hardness, which is one of the physical properties of soil.
When a cone is pressed vertically into a flat-cut cross-section, both the depth of cone penetration and the corresponding soil reaction force (spring compression) are measured simultaneously as variables, from which the theoretical hardness value (kg/cm²) is calculated. Due to this unique principle, a wide range of hardness from soft soil to soft rock can be accurately measured in a matter of seconds. Additionally, it can be universally applied to general soft materials other than soil.
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■Features - Accurately measures a wide range of hardness from soft soil to soft rock within a few seconds - Usable for general soft materials other than soil ■Specifications Name: Soil Hardness Meter (Yamanaka Type) Hardness Index Scale: 0–40mm 1 Division: 1mm Support Strength Scale: 0–∞kg/cm² Spring Strength: 8kg (at 40mm) Cone Dimensions: 50φ×230L(mm)・650g
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P2
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