Glass Thermometer Illustration - Temperature Measurement Tool #1663876 (License: Personal Use)

This image depicts a standard mercury-free glass thermometer with a red-colored liquid (typically alcohol or dyed spirit) filling the bulb and rising through a narrow capillary tube. Black horizontal lines mark evenly spaced temperature increments, allowing precise reading; the design reflects vintage scientific instrumentation still used for teaching and basic environmental monitoring.

Used in educational materials, health guides, weather blogs, or science websites to illustrate temperature measurement principles; targets users seeking visual explanations of thermometry or comparing analog vs digital tools.