This a point key interlocking arrangement provided on a point in Amalner yard on the Nandurbar-Jalgaon section of the Western Railway.The lock is designed in such a manner that only one key can be extracted from it depending on the position of the points.If the points are in the Normal position then the Normal key can be removed while the Reverse key remains in the lock and vice-versa. (Khalid Kagzi)