Teslong 3.9mm vs Triple Lens Borescope: Which Inspection Camera Reigns Supreme in 2026?
You’re a plumber. You push a single-lens borescope 18 inches into a 3-inch drain line, see nothing obviously wrong straight ahead, and pull it out. Thirty minutes later you find the crack — on the sidewall, two inches past where you stopped looking. A triple-lens camera would have caught it on the first pass. That…