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Scientific American, Vol. 90, No. 8 (1904) (1904)
leaf 12
ate driving the anchor into the ground. Two arms Washington, D. C., who invented this device, has just rail is securely covered thereby at all times. which are pivoted side by side to this head are each secured a patent on an improvement of the previous + 8 1 formed at the pivotal end with one edge… … the other hand, danger to human life is ever present. THE DISK TYPE OF WATER METER. © 1904 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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