Buhl Mark IV Opaque Projector 1000W Lamp Roll Feed Plug and Show

Buhl Mark IV Opaque Projector 1000W Lamp Roll Feed Plug and Show

The Buhl Mark IV is a tabletop opaque projector designed to project flat, opaque materials — single pages, open books, photographs, or drawings — directly onto a screen without any slide or transparency preparation. The projector accepts originals as they are and displays them at enlarged scale, making it a practical tool for classrooms, presentations, and document review. It is powered by a 1000-watt incandescent lamp housed in an adjustable top-mounted reflector assembly.

Specifications & What's Included

• Brand: Buhl, Inc.
• Model: Mark IV
• Projector type: Opaque projector (projects flat, reflective originals — no transparency required)
• Lamp: 1000W incandescent; 1050W maximum
• Power: 50/60 Hz AC
• Roll feed: Included — for projecting a continuous series of flat pages
• Projection table: Opens to accommodate originals of varying thicknesses, including open books
• Capable of projecting: Flat single pages, pages from an open book, photographs, drawings
• Housing: Olive-green metal body with large front ventilation grille
• Approximate dimensions: 24 x 18 x 24 inches

Applications

Opaque projectors like the Buhl Mark IV were widely used in schools, libraries, and meeting rooms from the mid-twentieth century onward as a way to share printed materials with an audience without photocopying or making transparencies. Because the Mark IV projects reflective originals directly — books, maps, artwork, printed photographs — it remains useful wherever a presenter needs to display a physical document at scale. These projectors are still sought by art educators for the enlargement tracing technique (projecting an image onto a wall or canvas for freehand copying), as well as by schools and community organizations maintaining older AV equipment. Buhl, Inc. has supported this product line for decades, and replacement lamps remain available from AV supply sources. The roll-feed feature makes it practical for sequential page-by-page presentations without handling individual sheets.