The Grove Indicator

Issue 12 and Volume 54.

The Grove Indicator E. H. Grove, water registrar of Washington, D. C., has invented an electric device for locating water pipes, which may prove useful to those in charge of water distribution. Mr. Grove says his primary purpose in working on this instrument was to save the water department of Washington a waste of thousands of dollars spent in a haphazard effort to locate “lost” pipes. He met with such success that the first inspection made by the heads of the District Government resulted in a recommendation that he furnish the water department 10 instruments, which this department figured during the past year saved them several thousands of dollars. This instrument was used in over 1,600 cases, and in each case the desired pipe was located without any cost to the Government except the time used in operating the instrument. The device consists of two pieces. One is called the…

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