Altium Designer Documentation


Created: September 14, 2015 | Updated: August 20, 2021

Parent page: PCB Query Functions - Membership Checks


For numeric properties of objects (e.g. height, width, radius, etc), this keyword is used to convert the current value - measured in the default workspace units - into imperial units - mil - where 1mil = 0.001inch, which is then tested against the value entered in the expression.


AsMils(Keyword : Number) : Number

Example Usage

AsMils(ArcRadius) = 250
Returns all arc objects that have a Radius property which is 250mil.

AsMils(Height) Between 300 And 500
Returns all component objects that have a Height property which is greater than, or equal to, 300mil, and less than, or equal to, 500mil.

AsMils(PolygonGridSize) >= 10
Returns all polygon pour objects that have a Grid Size property which is greater than, or equal to, 10mil.

AsMils(Width) < 50
Returns all arc and track objects that have a Width property which is less than 50mil.

AsMils(TraceLength) = 10
Returns all arc and track objects that have a Length which is equal to 10mil.

Note - due to an issue in the software, to correctly detect the TraceLength using the AsMils keyword the board units must be set to mils before running the query.


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