The De Vere Devon Monorail is a large-format monorail camera produced by the British manufacturer De Vere, a firm best known for its enlargers and studio equipment. As a monorail design, it was intended for studio and technical work where full movements and precise control of the image plane are required.

Auction data for the Devon Monorail is extremely thin: a single UK saleroom hammer result from October 2022 saw one sell for £100, which is the only verified data point available. With just one auction-hammer record on file, today's market value is best treated as indicative rather than established, and condition, completeness of standards and bellows, and inclusion of lens boards will heavily influence what any given example is worth or sells for.