The Vintage Dental Articulator 1938 HANAU Engineering Co Crown and Bridge is a semi-adjustable device intended for use in dental laboratories and dentistry. Manufactured in the United States by HANAU Engineering Co, this product is a valuable piece of dental history that could be used for educational or historical purposes. Its design and functionality reflect the craftsmanship and engineering of the early 20th century, making it a unique and sought-after item for collectors and professionals in the dental field.