Push/Pull Spring Balance Set PK
The Push/Pull Spring Balance has been re-thought to give a reading when the force is being pulled AND pushed. Above the spring tube a push rod sticks out of the top of the device so that a force can be measured when it is pushed. A superb invention with numerous uses in mathematics, technology and science activities. They are colour coded and have a clear flat area on the rod so you can create your own scales of measurement using a dry-wipe marker. Marked in grams and newtons. Set of 6: 250g, 500g, 1kg, 2kg, 3kg, 5kg.