  We present an Augmented Reality (AR) enhanced and networked fine beam tube
experiment for undergraduate physics education. In order to determine the
charge-to-mass ratio of the electron students are able to record all
measurement values digitally within the AR-environment wearing a head-mounted
AR device. Besides more accurate determination of $\frac{e}{m_e}$ it offers the
possibility to overlay additional data such as a magnetic field visualization
or formulas in order to foster the students' understanding of relations between
experiment and theory.
