Nt5 Trolley - Dynamics System

- This consists of a track and trolley kit
- Kit consists of 1.25m aluminum track
- Heavy trolleys running on dynamically run in bearings
- Ticker timer mounts on the end of the track
- With ticker tape, thread, pulley, mass pieces, hooks and stopwatch
- Carbon discs, line level and tape measure.

Gc4 Cell Holder - (Battery Holder)

- Strong plastic
- Tension screw one end
- Terminal on other end
- Takes 1 to 4 torch cells
- With cell divider and pin