The microtesla measures the strength of a magnetic field, equal to 10⁻⁶ teslas. It is the primary unit for mapping the Earth's magnetic field, which ranges from 25 to 65 microteslas depending on latitude. Geophysicists and engineers use it to quantify low-level electromagnetic interference from power lines and industrial equipment.
Heard on the job
The unshielded transformer is throwing off a 50 microtesla field that's messing with the hall sensors.