A method of making an optical element including forming an at least partial coating of at least one at least partially aligned thermally reversible photochromic-dichroic compound on at least a portion of a substrate. The adjusting device comprises a body, a locking shaft, a cover and two push buttons. The present invention further provides a method for performing a flexible design of such an antenna arrangement. The baffle plate is disposed between the linear light source and the light guide plate and the baffle plate is connected to the reflective mask and the frame. The respective first housing and the second housing can be moved in one direction, so that the first housing and the second housing can be brought into contact and separated from each other. The system includes a test device that makes measurements at the customer end and a portable computing device that interfaces with the test device, a customer gateway and database at a network location to analyze the data and determine a performance metric of the network.