Barometrograph \Bar`o*met"ro*graph\
(b[a^]r`[-o]*m[e^]t"r[-o]*gr[.a]f), n. [Gr. ba`ros weight +
me`tron measure + -graph.]
A form of barometer so constructed as to inscribe of itself
upon paper a record of the variations of atmospheric
pressure.
[1913 Webster]