Many instance links will have additional coordinate properties.
To display coordinate properties for a link:
From main dialog click Properties► Properties tab►Select available properties from:►Coordinates
The values returned for the coordinate properties respect the current Shared Project Location.
There are four types of coordinate properties:
Point coordinates represents a single location point for an element – the meaning depends on the kind of Revit element:
Line1 and Line2 represent the two end-points of the line associated with a particular family instance. Line coordinates apply to line-based families only: Ducts, Walls, Curtain Walls, Pipes, Railings, Fascia, Gutters, Structural Framing, Trusses.
The angle as defined by the the XY points of Line 1 and Line 2. This property is particularly useful as it relates to Grid management.
These coordinates represent the lower-left and upper-right corners of the three-dimensional rectangular bounding-box that contains the element. Bounding-box coordinates apply to: Floors, Ceilings, Roofs, Structural Foundations, Rooms, Spaces and all elements in Multi-Category links.
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