In an engineering context, metrology is typically categorized into three main levels of application:
: Overseeing the measurements used in trade, such as the accuracy of gas pumps or supermarket scales. Why Every Modern Engineer Needs It
Probes: Touch-trigger, scanning (analog), and non-contact (laser, structured light).
Non-contact, nanometer-resolution measurement of surface topography. Ideal for polished optics, MEMS, and semiconductor wafers.