Traditional liquid-in-glass (mercury) min-max thermometer.

Traditional liquid-in-glass (mercury) min-max thermometer.

Weather Thermometers: How Do They Work and Why You Need One - Maximum Weather Instruments

Liquid In Glass Thermometer Principle - Inst Tools

3 Simple Ways to Use a Glass Thermometer - wikiHow

This Max-Min Mercury Free Thermometer records the maximum and minimum temperature achieved during a period in both clear and easy to read 0C and 0F,

Max-Min Mercury Free Thermometer

Mercury-Free Dual Scale Classic Traditional Glass Accuracy Thermometer 2ml

classic / classic XL Geratherm Medical AG

Liquid In Glass Thermometer

Mercury-in-glass thermometer - Wikipedia

Traditional liquid-in-glass (mercury) min-max thermometer.

Liquid In Glass Thermometer Principle - Inst Tools

Mercury-in-glass thermometer - Wikipedia