Historical Mercury Thermometer Illustration - Scientific Instrument Design #3362796 (License: Personal Use)

This black-and-white line illustration depicts a traditional mercury-in-glass thermometer mounted vertically in a protective wooden or metal frame. The instrument features a dual-scale temperature gauge (Celsius), calibrated from 26 to 32 degrees, with the mercury column indicating approximately 28.2°C; the bulb reservoir at the base contains the liquid mercury, and metal brackets secure the tube to the frame. The design reflects late 19th- to early 20th-century scientific instrumentation standards.

Used in educational, historical, or museum web pages discussing the evolution of thermometry, physics teaching aids, or antique scientific instruments; matches user intent for visual reference, academic illustration, or vintage tech documentation.