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A sagging line caused by a too much paint or varnish on a vertical surface.



Related Terms

AFTER PERPENDICULARS

A vertical line at the intersection of the summer load line and the after side of the rudder post or sternpost, or the centerline of the rudder stock if there is no rudder post or sternpost

ASTRONOMICAL LATITUDE

Angular distance between the plumb line at a station and the plane of the celestial equator It is the latitude which results directly from observations of celestial bodies, uncorrected for deflection of the vertical which, in the United States, may amount to as much as 25'. Astronomical latitude applies only t

GEOMETRICAL DIP

The vertical angle between the horizontal and a straight line tangent to the surface of the earth. It is larger than DIP by the amount of terrestrial refraction.

LEADER

A vertical drain line on multi-story buildings employed to drain storm water into the storm sewer system.

BASELINE

A fore-and-aft reference line at the upper surface of the flat plate keel at the centerline for flush shell plated vessels. Vertical dimensions are measured from a horizontal plane through the baseline, often called the molded baseline.

FORWARD OR 
FORE PERPENDICULARS

A vertical line at the intersection of the fore side of the stem and the summer load waterline (See length between perpendiculars)

HEIGHT OF INSTRUMENT

In survey leveling, the vertical height of the line of collimation of the instrument over the station above which it is centered, or above a specified datum level.

ASTRONOMICAL MERIDIAN

A line connecting points having the same astronomical longitude. Because the deflection of the vertical (station error) varies from point to point, the astronomical meridian is not a plane curve. When the astronomical meridian is corrected for station error, it becomes the GEODETIC MERIDIAN. Also called TERRESTRIAL MERIDIAN and sometimes called GEOGRAPHIC MERIDIAN.

DEAD-ENDTOWER

Antenna or transmission line tower designed to withstand unbalanced mechanical pull from all the conductors in one direction together with the wind strain and vertical loads.

ANGLE OF FALL

The vertical angle at the level point, between the line of fall and the base of the trajectory.

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