Missile Velocity Measuring Kit
You can use this as a tool to measure the velocity of your missiles. This can help you develop or optimize your missiles.
Instructions:
Simply add the loose pieces to your missile and be sure that the small RX antenna and the physics sensor are connected to electricity (such as the missile's hardpoint). Once that is done, the display stand will show the absolute linear velocity of the missile in meters per second. The transmitter and receiver are on channel 69 (nice) by default.