With the image sensor (CCD or CMOS) at the tip these industrial endoscopes give improved image quality over optical types while also providing the option of video image capture. The 9.8mm dia. types are available in standard lengths of 1m, 2m and 3m with any length up to 100m available to order. The 4.5mm types come as standard in 1.5m lengths with optional 3m and 5m types available.