Hi paraHO,
I searched the web, but this kind of devices are very rare to find. There is a antenna alignment tool made by Kathrein. It is a bit heavy and the clamp and all its components are made of metal, which is heavy for the technician to take it up to the tower. I would prefer the CELaligner much lighter and made of elastic band for holding the antennas while the kathrein uses a metal to hold the antenna.