Lens Selector/Viewfinder, A must have for anyone who is installing or ordering security cameras. Choosing the right lense is as easy standing at each camera point and adjusting this easy to use tool. Optical tool to determine the field view of a lens, Carry this amazing tool in your toolbox and know that you are purchasing the correct cameras/lenses for your security camera installation. Try any number of focal lengths and camera positions. Then select exactly the optimal camera locations and focal lengths. Handles 1/3', 1/2", and 1" CCD formats. Comes complete with carrying case and lanyard. CBC AMERICAS Corp. is part of a multi-billion dollar global network of Import Export, Trading and Distribution companies strategically located throughout the world with headquarters in Tokyo, Japan. Their main areas of business are importation and distribution of, CCTV Security Products, Chemicals and Pharmaceuticals and Commercial Flooring. They manufacture plastic molded and metal coated automotive parts for the North American automotive industry.