The damage reference plate is used to assess internal and external damage which an inspector locates on a solid wall or composite cylinder. The external points are an exact measurement of pits on the outer wall of a cylinder
DURABLE, WATERPROOF LED INSPECTION INTERNAL CYLINDER LIGHT SET. White bright LED lights and a UV light strip embedded in an aluminum channel for durability. Comes with a dimming switch to adjust the intensity of the light when inserted into a cylinder. White light extensions available for larger cylinders.