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Karl Bomhard
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Individual
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Publication of GB190103499ApublicationCriticalpatent/GB190103499A/en
3499. Bomhard, K. Feb. 18. Pressure and vacuum gauges.-A well manometer a, with float d in a central tube b, operating an index and recording- pencil, is used to measure air draughts, specially in furnaces, the instrument and draught passage being connected by a pipe c.
GB190103499D1901-02-181901-02-18Improvements in or relating to Draught or Pressure Gauges
ExpiredGB190103499A
(en)