Enoscope is a device that is used to measure the speed of vehicles passing through a particular point on a road. It is a portable device that can be easily installed and used by traffic police to monitor the speed of vehicles.

Spot Speed
The enoscope is used to determine the spot speed of vehicles passing through a particular point on the road. The spot speed is the instantaneous speed of a vehicle at a particular point in time. The enoscope measures the time taken by a vehicle to cover a known distance and calculates the speed of the vehicle based on this information.

How it works
The enoscope consists of two sensors that are placed on either side of the road. When a vehicle passes through these sensors, it triggers a timer that measures the time taken by the vehicle to cover the distance between the two sensors. Based on this time and the known distance between the sensors, the speed of the vehicle is calculated.

Limitations
The enoscope is a useful tool for traffic police to monitor the speed of vehicles on a particular stretch of road. However, it has some limitations. It can only measure the speed of one vehicle at a time and cannot be used to measure the average speed of a group of vehicles. Also, it cannot be used to measure the travel time of a vehicle or the time taken by a vehicle to cover a particular distance.

Conclusion
In conclusion, the enoscope is a device that is used to determine the spot speed of vehicles passing through a particular point on the road. It is a useful tool for traffic police to monitor the speed of vehicles and enforce speed limits on a particular stretch of road.