Cellular towers need periodic remote visual inspection. Videoscopes or Video borescopes are used to inspect the inner structure of the towers for defects. Inspector will look carefully for corrosion, cracking, pitting, oxidation, weld penetration and general condition of the interior of the immense structures.
Videoscopes are chosen for the remote visual inspection task because of their high resolution, portability and ability to snake in the tower structures as far as 20 feet (7.5 Meters). Inspectors need to climb the towers and insert the videoscope or video borescope inside existing weep holes. Ideally, a 6mm videoscope or video borescope works best for this application. Battery power is also a must because AC power is simply not available in the challenging locations inspectors need to work in.