Mason's Wet and Dry Bulb Thermometer Subcategory_Bases and Rods Demonstration electrophorus with a 9cm

Demonstration electrophorus with a 9cm aluminum disc

this small anemometer measures wind speed during earth-science fieldwork and classroom weather investigations

the medium-strength option for classroom investigations into magnetic poles and field-line geometry

10-inch vacuum pump plate on an aluminum base with a stopcock and rubber seal

1% accuracy on double silk-covered constantan coils

Mason's Wet and Dry Bulb Thermometer Subcategory_Bases and Rods Demonstration electrophorus with a 9cmPaired dry bulb and wet bulb thermometers on this Mason's hygrometer, calculating relative humidity from the temperature difference between the two readings for meteorology coursework.