There are well-proven alternatives to rack and pinion focusing for the home camera builder with limited funds or tools. With the New Vue twin-rail view camera, rough focusing was done by sliding and locking the front standard, and focusing the rear with a lead screw. The Noba studio camera used a V-belt system for focusing. Flexible line secured to the standard and wrapped several turns around a focusing shaft might also work. Some Polaroids used a lever for limited range fine focusing.