Historical Scientific Apparatus: Arched Frame with Adjustable Clamps #3045139 (License: Personal Use)

This black-and-white technical illustration depicts an arched metal frame mounted on a rectangular base, featuring two vertically aligned clamps near the lower ends of the arch-suggesting use for securing rods, wires, or glassware. The fine linework and shading indicate it was likely published in a scientific manual or patent document from the late 1800s. Its design reflects pre-modern lab equipment built for stability and manual adjustment.

Used in educational content about historical scientific instruments, museum digital archives, or vintage engineering blogs; matches user intent for researching antique lab tools, patent illustrations, or STEM heritage.