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XTA? L ISf tr! ITOOIvt m vs * on *c London and North-Eastern railway has proved effectIV6 m registering the strain to which railway bndgeß can bo subjected without danger. It oonsista of a diaphragm box, sc%iewhat like a gramophone sound' box filled with coloured fluid. Attached to the diaphragm is a thermometer tube, with registration figures. When fastened to the ■ bridge by means' of thumb screws, thejiquid registers a certain height, and after the passage of a havy train, the instrument, which is very sensitive, registers Ihe .«SSIUBMI»Jsd. egeci ufioa thj» fkuotura.

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https://paperspast.natlib.govt.nz/newspapers/EP19250319.2.9

Bibliographic details

Evening Post, Volume CIX, Issue 65, 19 March 1925, Page 2

Word Count
92

Untitled Evening Post, Volume CIX, Issue 65, 19 March 1925, Page 2

Untitled Evening Post, Volume CIX, Issue 65, 19 March 1925, Page 2