Measure-enabled files allow you to make exact measurements of models with Measure
You can disable measurement when you first create an eDrawings file. You cannot change this status once an eDrawings file is created; you must republish
Measure-enabled vs. Measure-disabled
To protect the details of a design, you can make measure-disabled eDrawings files. You can save measure-enabled files as measure-disabled files. However, once a file is saved as measure-disabled, you cannot make it measure-enabled.