Clinical Thermometer Illustration - Medical Measurement Tool #3435626 (License: Personal Use)

This vector-style illustration depicts a classic mercury-free clinical thermometer with a transparent glass body, a rounded bulb containing blue liquid (representing non-toxic galinstan or colored alcohol), and five evenly spaced black calibration marks along the stem. The design mimics traditional analog thermometers used in medical settings before digital devices became widespread. The image is set against a transparent background for versatile web use.

Used on health education websites, medical blogs, or pediatric care pages to visually explain temperature measurement; matches user intent for understanding how thermometers work or identifying types of medical instruments.