It is used to assist in calculating the working
efficiency when the excavator is digging the soil.
Composition:
1.Hand-operated lifting platform;
2.Dynamometer (with peak hold function);
    range 20N (2kg),
   Graduation value: 0.1N (0.02kg), accuracy 1%
3.Base (for fixing the soil sample cup, and can
    move back and forth, left and right)
4.soil sample cup
5.Guard ring
6.Pressing plate
7.Pressure device (2kg)