Micro borescopes that are 3.0 mm (0.12 in) and smaller in diameter can be used to inspect the interior of castings and machined parts. Micro borescopes or mini borescope can actually be as small as 0.35 mm (0.013 in). It is common that manufacturers will want to know the condition of interior channels and other hidden areas on these parts. They will want to inspect for burrs, excess material, blockages and chips or debris left from the machining process. Micro borescopes maybe used to inspect in areas where there is straight access available. When the inspection requires snake around corners, down channels and winding spaces a micro borescope is needed. The ability to inspect the interior of castings and machined parts with flexible and rigid micro borescopes helps to improve to quality of manufacturing.