Vividia GB-4510 Gun Barrel Rigid 4.0mm Borescope Kit with Mirror Tube and Phone Attachment

Vividia GB-4510 Rigid 4.0mm Borescope is designed specifically to inspect and exam gun barrels and other close focus range objects. There are two models with different viewer orientation. GB-4510R has viewer on the end of borescope, while GB4510S has observation window eyepiece on the side of the probe. The straight tube diameter for both GB4510S and GB-4510R is 4.0mm (0.16 inch) and length is 510mm (20 inch). The side-viewing mirror tube with diameter of 4.5mm (0.18 inch) can be fit nicely into the borescope tube to exam details of gun barrel walls. The mirror tube can be rotated 360 degree freely. The phone attachment is used to view with smart phones like iPhone, Android phone, etc. Other gun borescopes are GB-430 (4mm diameter short, USB to PC and Android phone tablet), GB-460 (4.0mm diameter, long, USB to PC and Android devices) and GB-28510 (2.8mm diameter, long).