When you make a calibration and compare two devices, you may find out there is some difference between the two. So, it is pretty logical that you may want to adjust the device under test to measure correctly. This process is often called adjustment or trimming.

Formally, calibration does not include adjustment, but is a separate process. In everyday language the word calibration sometimes also includes possible adjustment. But as mentioned, the adjustment is a separate process according to most formal sources.