Manual

This phenomenon is explained by the fact that the locator is sensitive to the magnetic field components parallel to its long axis. At
points B and C the field is perpendicular to the locator so no high frequency is produced at these points.
Locating Manholes, Septic Tanks and Well Casings
The magnetic field is strongest at the edge of a shallow manhole cover. You can easily trace the edges of covers near the surface.
Locating depth ranges up to 10 feet.
The great length of a well casing provides a strong field at the surface that makes it easy to locate casings buried up to 18 feet deep.
The GA-52Cx can be used to precisely locate the metal handles or reinforcing bars on septic tank covers at depths of up to 4 feet.
Figure 10. Signal Pattern Provided by Septic Tank Covers
Figure 8. Locating Manhole
Covers
Figure 9. Locating Water
Well Casings
Schonstedt Instrument Company 5