The one function of the Ridgid sewer camera is to allow the person that is operating it to get a good view inside those tight and hard-to-reach places in the sewers and pipes. With most of these devices you can both do a close inspection while you are operating it and record the inspection process to watch it again later. Read more: http://www.introinto.com.au/sewer-cameras-101/
Source: https://www.test-equipment.com.au/industrial/drain-cameras/