Historical Arched Frame Apparatus - Scientific Instrument Illustration #132039 (License: Personal Use)

This black-and-white line drawing depicts a rigid arched metal frame mounted on a rectangular base, featuring two vertically aligned clamping fixtures near the lower ends of the arch. The clamps appear designed to secure optical components such as lenses, prisms, or mirrors, suggesting use in spectroscopy or ray optics demonstrations. The clean, precise linework indicates it was likely published in a late 19th- or early 20th-century scientific manual or patent documentation.

Used in educational or archival web pages about historical scientific instruments, physics pedagogy, or museum collections; serves users researching antique lab equipment, optical apparatus evolution, or technical illustration styles.