Thank you for visiting Lit Systems, Inc. Click on the topic of your interest and the information will appear below the list. site inspection We offer comprehensive visual inspection of tower structure, antennas and related components, generators, battery assemblies, compound area, site grounding, obstruction marking and lighting. Depending on the purpose of your inspection (routine, post construction, post installation, insurance requirement, lease space verification, structural analysis) we can provide many special inspection services such as complete tower member mapping, antenna and line audit, grounding test (clamp-on and "meggar"), measurement and adjustment of tower plumb and guy wire tension, as well as more situation specific testing such as ultrasonic leg thickness testing and other non-destructive structural measurement.