Atmospheric Mat with Hook, Measures 10.5 x 10.5 In, durable, thick rubber mat has a simple design that demonstrates a powerful concept - Atmospheric Pressure
Boyleft s Law Apparatus, To demonstrate the relationship between pressure and volume of gas. Consists of a 29 mm diameter graduated cylinder with a piston and a screw valve, 60mm manometer scale is from -1000 to 3000 hPa with 50