The cup-micrometer, for measuring minute vertical movements, is so amazingly sensitive that it is said to be able to "detect the settlement. of. a fault? moving at the rate of an inch' a "century, or to check from «, reservoir I "■•"the slightest leakage, amounting, perjure to a bathful in a nijnt* JTWI^
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Bibliographic details
Auckland Star, Volume LXIX, Issue 224, 22 September 1938, Page 12
Word Count
52Page 12 Advertisements Column 1 Auckland Star, Volume LXIX, Issue 224, 22 September 1938, Page 12
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