How can I check the accuracy of measurements in the model?

1. Use the 3D Ruler for this purpose.
Read how to work with it here.snapping2. Or go to the 3D view, select the relevant element by clicking on it, press the “C” button and you will see the measurements for this particular element. To cancel, click on "C" again.c-buttonN.B! Kreo has developed its own measurement library with more detailed properties.

For instance, let’s select the concrete reinforced floor and look at its area. There is only 1 value, (i.e. Area is 630.817 m2) if we look at the Revit properties, but Kreo identifies both Net and Gross Areas with two different values (630.82 m2 and 697.47 m2 accordingly). The first one is the measurement excluding voids, while the second one includes voids.
See what each measurement means here.measurement-libriary