Measurements in mouse brain atlas

Hi! Apologies if this is a very simple thing to do. I’m hoping to find measurements of the distance of layer 5 from the pial surface as well as the pial surface area in primary somatosensory, visual and auditory cortices. I can see layer 5 and can select the areas in the interactive atlas viewer, but I’m not sure how to take measurements. Any help would be greatly appreciated!