nose line

nosing line, nose line

The slope of a stair determined by a line connecting the lead edge or nosing of the stair treads.
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References in periodicals archive ?
Draw a faint vertical center line - the nose line - from top to bottom.
Mark the tip of the nose on the nose line about one-third from the bottom of the egg.
Mark a spot for the middle of the lips on the nose line about halfway between the tip of the nose and the bottom of the chin.