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Human Electric Respiratory System Model/Biological Teaching anatomy model
This real specimen of Frog Life Cycle has been embedded in plastic for observation and study
Premium Quality: Chalkboard Protractor is easy to read graduations make these chalkboard accessories ideal for any classroom
℃/℉ Temperature unit selection
Dissecting Scissors
Hygrometer Wet & Dry Scissors Human Electric Respiratory System Model/BiologicalFeaturing a Classic mason Hygrometer with wet and dry bulb hygrometer and a large water reservoir. One thermometer bulb is in air and the other is wrapped in a wick kept moist from a water reservoir. The difference between the two readings is used to give an accurate calculation of humidity. Complete with wet and dry bulb tables. Ranges: 5 to 50C & F, + 1C & F Divisions: 1C&F Product Dimensions: 310mm x 77mm x 33mm. Premium Quality: Hygrometer Wet &
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