MAGNETOGRAPH
Source: 567
Mag‐net″o‐graph (?), n. [[Magneto- + -graph.]] (Physics) An automatic instrument for registering, by photography or otherwise, the states and variations of any of the terrestrial magnetic elements.
Source: 567
Mag‐net″o‐graph (?), n. [[Magneto- + -graph.]] (Physics) An automatic instrument for registering, by photography or otherwise, the states and variations of any of the terrestrial magnetic elements.