What instruments are used to measure temperature and humidity in the lab environment?

Measuring temperature and humidity is essential in laboratory environments to ensure optimal conditions for both animals and experimental processes. Thermometers are instruments that specifically measure temperature, providing accurate readings that help maintain the appropriate ambient conditions necessary for various laboratory activities. Hygrometers are used to measure the level of humidity in the air, which is crucial for the welfare of laboratory animals and the integrity of certain experiments.

Together, thermometers and hygrometers offer a reliable means of monitoring these two pivotal environmental factors. Proper control of temperature and humidity can significantly affect the health of laboratory animals as well as the outcomes of scientific investigations, making these instruments indispensable in a laboratory setting.

The other options do not relate to the measurement of temperature and humidity. Scales and rulers measure weight and length, respectively, while microscopes and centrifuges are used for magnifying specimens and separating substances based on density. Computers and printers serve tasks related to data management and documentation rather than direct environmental measurement.