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Safety valve
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This is a drawing for industrial application. It will be given to a mechanics to follow exactly the size of each component and construct a device which is used on a steam engine or reservoir.
The main part of the drawing is correct. However, all the writing is very poor. In fact it was made as an exercise and in this context the quality of writing was not important. It is presented on this website because it can explain my interest in designing the device for railway security presented in 2008 on the N° 186 painting.
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