Vividia GB-430 USB Digital Manual Focus Gun Barrel Borescope with 4mm (0.158") Diameter and 12" (30 cm) Long Insertion Tube

Vividia GB-430 Digital Borescope is a short version of GB-460 Borescope with 30cm (12") long insertion tube. 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 (4.5mm 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. .