Acreage Value in Measurement widget incorrect

[Anonymous User]

implemented the measurement widget and when using acreage, the result is off by a factor of 3. Map service is in State Plane Coordinate System.

Has anyone else experienced this?

Thanks!

RGibson

[JianHuang]

For coordinate systems other than web mercator or lat/long, it requires a geometry service. This is not a problem if the map is under web mercator or lat/long in which geometry service is not needed anyways.
Please include a geometry service in your application by:

esriConfig.defaults.geometryService = new GeometryService("http://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer");