The purpose of a sight line is that its allows the jaws of a cornice brake to be positioned, so that the bend made by the brake will start at the bend tangent line.
What is a sight line?
This refers to the series of lines drawn on plan to indicate the limits of the audience vision from extreme seats.
In conclusion, the purpose of a sight line is that its allows the jaws of a cornice brake to be positioned, so that the bend made by the brake will start at the bend tangent line.
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