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1904 Athenæum 31 Dec. 911/3 The authors described an apparatus called the ‘micro-barograph’.

1905 W. N. Shaw & W. H. Dines in Q. Jrnl. Royal Meteorol. Soc. 31 40 It is proposed to call the apparatus the ‘Micro-Barograph’.

1933 Geogr. Jrnl. 81 245 A new instrument, the microbarograph,..for recording variations of atmospheric pressure.

1961 Daily Tel. 24 Oct. 1/1 The seismographs and micro-barographs which recorded the tremors through the Earth, and the miniature blast or sound waves through the air.

1994 Nature 6 Jan. 34/2 The yield of the Tunguska blast has been estimated at 10–20 MT from microbarograph measurements in Europe and other methods.