Zistos Large Bore Inspection Borescopes are designed to provide a detailed view and inspection of the condition of the inside of artillery tubes. A built in DVR can record video (AVI) and still (JPEG) images from the push of a button for reports, archival data, and for near real time transmission (email, etc.) to technical experts as needed. The simple to assemble and use kits are provided in a single waterproof transport case and are rugged and field proven for deployment as needed, where needed.