Pressure Cylinders practical-life We cannot guarantee maps purchased

We cannot guarantee maps purchased elsewhere will fit our stand

while blue represents tens

first quarter

the box is locked shut

Pressure Cylinders practical-life We cannot guarantee maps purchasedThe Pressure Cylinders provide experiences in pairing and grading degrees of pressure. By pressing the spring loaded plungers, the child senses the difference in resistance. This set comes with a specially designed work tray containing 5 matching pairs of cylinders. Each matching pair has one cylinder with a black plunger, and one with a white plunger. Features Tray dimensions: 23. 5 cm x 10 cm x 2 cm. Cylinder height: 8. 8 cm. Diameter: 3 cm.