borescope

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borescope

, bore scope (bor′skōp″)
Any device used to look inside small spaces or internal organs. It has three basic parts: an eyepiece on one end, a lens on the other, and a medium (such as a fiberoptic cable) that transmits light from the lens to the eyepiece.
References in periodicals archive ?
Looking through the bore scope, you can measure deviations from the centerline and determine how much to adjust the positions of machine components in order to return the system to alignment.
The bore scope showed the expected powder fouling, plus a few small patches of copper fouling.
GySgt Leonel Lora, middle, assigned to the 31st MEU, uses a bore scope camera to verify the engine of a AV/8B is serviceable while SSgt Steven Vladiff, left, observes and Cpl Justin Powers, top, turns the blades of the engine in the hangar bay aboard the USS Bon-homme Richard (LHD 6).
The Olympus bore scope (shown being used here) can provide a good view of the inside walls of the tube.
And the day was now a bust, as I didn't have a back-up rifle with me, the bore scope was back in the shop, and I probably had a baffle strike or three in the Covert.
I was curious about the potential for damage to the Grunt, what with the corrosive ammo exposure, the heat, and the probability of a baffle strike, so I hauled my Hawkeye bore scope down off the shelf and took a look.
The barrel's never come close to charring the fore-end, and the throat of the bore doesn't show a trace of heat checking when examined in a bore scope.
The team took the initiative to use a bore scope to verify corrosion inside the connecting link.
Before doing any shooting I looked through the rifle's barrel with my Hawkeye bore scope, finding it pretty much caked with copper, whether from factory testing or another gun writer I don't know.
After cleaning again, the barrel is hand-lapped one more time to guarantee an exceptionally smooth bore and given a final inspection with a bore scope.
They developed an innovative inspection technique using a flexible bore scope to assess the hydraulic line condition without having to lower panel 51.
The rest of a rifle, shotgun or handgun can be disassembled and examined closely, but we really can't see the details of a 24" rifle bore--unless we use a bore scope.