Rigid? Semi-rigid? Soft-metal Probe of Video Borescope
 
Rigid: Rigid borescopes are the most inexpensive type of borescope. A rigid borescope consists of a single hollow tube along with an eyepiece, lenses and a light source.
Their movement is limited. Users can inspect objects only up to a certain level because of lacking of flexibility. 
They are usually used in areas that have direct access to because they have little to no flexibility. 
They transmit images by traditional lenses that display through an eyepiece. Inspectors commonly use this type for its image clarity and durability.
 
Flexible: A flexible videoscope or video borescope with soft-metal probe is an advanced type of borescope that has a very small image sensor embedded into the tip of the scope. 
The video image is relayed from the tip and camera lens assembly back to the display via internal wiring. 
This is unlike a traditional rigid borescope and flexible fiberscope. Inspectors commonly use this type for its image versatility,agility, and efficiency.
 
Semi-rigid: A improvement from rigid borescopes, semi-rigid borescopes are bendable and best for confined spaces that do not offer room for articulation. 
In terms of current technology, semi-rigid probes and soft-metal probes have the same image quality, light, and durability. Which one to choose depends on the purpose of usage and application.
 
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