Celsius Thermometer Diagram - Educational Temperature Measurement Tool #3435629 (License: Personal Use)

This illustrated analog thermometer features a clear glass tube with a red liquid column rising to approximately 18°C, marked against a calibrated scale ranging from -20°C to 40°C. The scale uses color-coded numerals (red for positive, blue for negative, green for zero) and is mounted on a pale yellow backing with metal fasteners at top and bottom. The °C symbol appears in gold at the lower right, confirming the metric unit.

Commonly used in educational materials (e.g., K-12 science curricula), weather infographics, or DIY thermometry guides; serves users seeking to understand temperature measurement basics or interpret analog instruments.