Wall Thermometer, Wet and Dry Bulb, Graduated in Celsius -20 deg to +50 deg (1 deg C) and Fahrenheit 0 deg to +120 deg (2 deg F). Includes humidity table in C and F. Dimensions: 10in x 3in x 0.5in
Solar Balloon, This 50 foot long by 29in diameter Solar Balloon, 400 feet of string, complete instructions and science learning guide balloon, Demonstrates buoyancy, convection, thermodynamics and solar power, Teaches Bernoullis Principle and Pascals Principle, For ages 14 plus
Giant Classroom Thermometer, Largest Working Thermometer Available for Class Display! 30 in Wall Mounted Thermometer Has 23In Tube Recessed Into the Sturdy Wooden Base, Temperatures Range from -40Degree to 50Degree C and -40 D