Yes. Simply click hold SHIFT and click on points to can get a measurement.
However you will want to set the photo scale for each 3D virtual tour. The photo scale can be defined as the ratio between a distance in a photo and the actual distance in the real world. 3D coordinates of a point cloud or camera positions are initially scaleless until the photo scale is determined. Cupix Online Editor provides an easy way for you to specify reference dimensions as the input of the photo scale and then allows you to measure the actual dimensions from the photos. The point cloud coordinates are also automatically updated to the photo scale when you download them.
So if you are taking a measurement and it doesn't seem seem correct, make sure to first set the scale.