Jules, a technician, is performing maintenance on the microscopes in a lab. She is testing each microscope to make sure that it magnifies to a standardized level and provides accurate results. What is the technician doing?

Jules is checking whether each microscope produces the expected, standardized magnification and accurate results. This process is calibration: adjusting or verifying an instrument so its measurements match a known standard. Therefore, she is calibrating the microscope.

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