| 摘要 |
The subject of the present invention is a gauge for measuring the internal and external dimensions of a smooth, threaded or tapped tubular element, characterised in that it consists of a plate 1 including at least one female part 1e/1g/1i/1l, which corresponds to the external dimension of the tubular element or of the thread, and at least one male part 1f/1h/1k/1m which corresponds to the internal dimension of the said tubular element or of the female thread, in order to measure the dimensions of the elements of a tubular network and to facilitate the choice of the complementary elements of the said network with a view to their connection. <IMAGE>
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