Borescope

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borescope

[′bȯr‚skōp]
(engineering)
A straight-tube telescope using a mirror or prism, used to visually inspect a cylindrical cavity, such as the cannon bore of artillery weapons for defects of manufacture and erosion caused by firing.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Borescope

A device for examining hidden areas in an existing structure, consisting of a flexible rod of fiber optics; one bundle of fibers carries light to the ends of the fibers, the other bundle is used for viewing or recording the image with a video camera.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
HCR starts by inspecting the chamber and barrel with a Hawkeye Bore Scope. If any problems are detected--like my Model 70's rough bore--they are corrected.
My bore scope revealed no copper fouling but I could see some remaining carbon fouling at the back third of the barrel.
Using a bore scope kit, the NCOs were able to obtain valuable pictures and video for the Launcher Item Manager.
The Olympus bore scope (shown being used here) can provide a good view of the inside walls of the tube.
Installing a new barrel pretty well solved the problem, so it is a logical assumption that the original barrel was "bad." Indeed, an examination of the barrel with a high-magnification bore scope revealed several imperfections that were not present on the replacement barrel.
A bore scope will show the extent of the altered lands forming the new throat.
Larry Willis at Innovative Technologies recently developed an electronic bore scope. It uses a 40-inch-long fiber optic cable, at the end of which is a tiny white light, and a "Wide View Light Reflector" showing a 360-degree view.
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.
The Hawkeye Bore Scope meets that need very handily.
The Kimber only weighs 2 ounces over 6 pounds with a Leupold 3x20 Big Bore scope in Leupold mounts and, while recoil is definitely noticeable, it still ain't anything like a typical .338 Winchester.