Measurement system with image capture capabilities

A mobile measurement system (400) includes a handheld device (410), a measurement device (402), and an optical sensing device. The measurement device (402) and the optical sensing device are communicatively coupled to the handheld device (410). The handheld device (410) receives measurement data that comprises at least one measured electrical parameter corresponding to a physical property of an external system (414). The measurement device (402) generates measurement data that corresponds to a period of time. The measurement device (402) communicates the generated measurement data to the handheld device (410). The optical sensing device generates optical data corresponding to an interface (434) of the measurement device (402) and the external system (414) where the measurement data is being generated. The generated optical data corresponds to a particular time within the measurement period of time. The mobile measurement system (400) associates and stores the generated optical data for the particular time with measurement data corresponding to the period of time.