The Wall-Eye Mini is our second generation in-wall viewing scope. We completely redesigned and improved the original to meet the needs of todays wire/cable installation professionals. The Wall-Eye Mini can be used with only 3/4 inch access hole and the installer can rotate the Wall-Eye Mini to get a complete 360 degree view of hidden obstacles and potential profit killing dangers such as water and gas pipes. You don't need a $100.00 scope that is unwieldy and useless beyond 3 feet. You need a Wall-Eye Mini!