Gun Barrel Borescope, 4mm 24 Long Rigid, Manual Focus, 4.5 Monitor

Vividia GB-460 USB Digital Manual Focus Gun Barrel Borescope is specially designed to inspect rifle gun barrels with its small diameter (4 mm), and long insertion tube length (24", or 60 cm). Vividia GB-460 USB Digital Manual Focus Gun Barrel Borescope also features manual focus capability, so end users can adjust focus to get better images. With USB connection, Vividia GB-460 Borescope can be used with Windows PC, Mac, Android phones and iPhone/iPad (with extra wireless converter like Vividia VA-B2 AirBox) to do preview, take pictures and videos. One can use software to do measurement if needed. Side mirror (4.3mm, ie . 0.167 inch diameter) can be used to inspect wall of barrel in details. The 4mm (0.158") diameter camera probe can fit .17 caliber and large gun barrels. Vividia GB-430 Digital Borescope is a short version with 30cm (12") long insertion tube.