Remote Visual Inspection is rigid by Boroscope or Fibroscope . Boroscopes are mostly used in non-destructive testing techniques for recognizing defect or imperfection.

 Boroscopes are commonly used in the visual inspection of aircraft engines, aero-derivative, industrial gas turbines, steam turbines, diesel engines, automotive sector, inspection of large tanks & pressure vessels, sewer lines, gas & oil refinery pipeline inspection, boiler industries