NTG100+2 Sets of Side Mirror The Teslong NTG100 boroscope is the perfect weapon tool to help you check how well your barrel is cleaned.This boroscope has a small focal length of about 0.4 inches, which gives high-quality images illuminated by LED ring light. Equipped With 2 sets of Side mirrors: includes 5mm, 6mm, 7mm, 8.5mm and 10mm diameter mirrors, which are mainly suitable for barrels of .22, 0243, .30, .38, .40 and other calibers.Carbon residues accumulate during firing and can impair your accuracy. the boroscope helps you to see deposits in the barrel and grooves of the grooves and is a great support when cleaning the barrel.Boroscope works with Android, Windows and Mac.Does not work on iPhone and iPad, Samsung Galaxy Note 10,Samsung Galaxy S10+, Samsung a31.Please avoid bending the flexible probe to a radius smaller than the storage box. Bending too tightly can damage the borescope. Download & Installation App AndroidFor Android 4.5+:Please confirm your Android Device support OTG and UVC.You can download FREE APP [USB Camera] ,[Endoscope Camera] or [Elementary USB Camera] from Google Play Store.Some Android devices,if there is nothing in the preview area, please go into Android Settings | Permiions | Storage Permiions | and enable this camera.WindowsFor Windows 7/8/10: Please download [Endoscope camera] or [Amcap] from google or follow the link in the user manual.For Win10 system you can also run with the [Windows Camera]: Search your computer for"Camera" and open it.MacBook(NOT support iPhone & iPad !!!)For MacBook OSX 10.6+: Please run the Mac's own software:[Photo Booth] or [QuickTime Player]. (NOT support iPhone & iPad !!!)