Typically, the GDZ construction pile caliper and inclination instrument caliper arms are mechanically connected to a linear or rotary potentiometer such that a change in the angle of the arms causes changes in resistance.
GDZ construction pile caliper and inclination instrument different arm length can be used to optimize sensitivity for the borehole diameter range expected. Vertical resolution of caliper measurements is a function of the size of the contact surface (arm tip or pad); the response of the mechanical and electronic components; and digitizing interval used.
GDZ construction pile caliper and inclination instrument Application & Features
Used to determine borehole diameter and shape and wall roughness
In advanced cases can be used to find the volume of the drilled hole
Can be used to serve as an indication on the stability of the walls of the drilled holes
Sediment thickness test