Semi-Rigid Borescopes

Semi-rigid borescopes have a gooseneck probe tube, which means that one can bend the probe to the shape one want, and the probe tube will keep the shape. 

Benefits of such sem-rigid probes:

• Rigid, and the probe can stand-up 
• Bendable to meet some challenging working conditions

Shortcomings: Can not go thinner than 4mm, and heavier for high rigid tube.