1. Method for optically scanning and measuring an environment comprising: providing a three-dimensional (3D) measurement device having a first camera, a second camera disposed a defined distance from the first camera, a third camera, and a projector, the 3D measurement device further having a control and evaluation device operably coupled to the first camera, second camera, third camera and the projector, wherein alignments of the first camera and of the second camera to each other are adjustable to overlap a field of view of the first camera and a field of view of the second camera to provide stereoscopic images of objects in the environment; recording images of the environment with the first camera and the second camera; producing a 3D scan of the environment with a three-dimensional point cloud from the images recorded by the first camera and the second camera; recording a video image of the environment with the third camera; displaying the video image on a first portion of a display; and displaying at least a portion of the three-dimensional point cloud on a second portion of the display, the second portion of the display being arranged about the periphery of the first portion of the display; wherein the at least a portion of the three-dimensional point cloud displayed in the second portion represents a portion of the environment outside of a field of view of the video image, wherein a scale of the image changes with a movement of the three-dimensional measurement device, the scale being a ratio of an area of the first portion of the display to an area of the second portion of the display.