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W W.8 methanometer

A dual-scale, direct-reading instrument for measuring the combustible gases percentage in mine air. It gives combustible gases readings over the range from 0.2% to 5% and is graduated 0.1% per division on the scale.

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Creator

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
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