borescope

• boroscope

From bore + -scope.

borescope (plural borescopes)

1. An optical instrument used for seeing inside tight spaces, consisting of a rigid or flexible tube with an optical relay inside so that the view through a lens or window at one end of the tube may be seen from a lens or eyepiece in the opposite end of the tube.

borescope (third-person singular simple present borescopes, present participle borescoping, simple past and past participle borescoped)

1. To see inside or examine (something) using a borescope.

   Maintenance borescoped the jet engine to check for damaged turbine blades.

• endoscope
• periscope
• videoscope