What are drawing Legend?

In this article will learn all about a Legend. A legend simply put is a chart with all of the symbols used in an individual diagram. It could be an electrical, mechanical, P&ID, or other types of diagram. This is an invaluable tool because it simply is not possible to remember every single symbol used in our diagrams. There are hundreds if not thousands of components hat can be used in an industrial setting.

A legend gives each of those components a standardized symbol and labels that symbol. Almost everyone has had to look in the owner’s manual of their car to see what the different warning lights and gauges mean. The legend for a diagram works the exact same way. It gives you a word and meaning for each of those symbols. You probably already know what the part or component is, but you might not have known the schematic symbol for it.


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