The 1:50,000 Topographic Line Map (1:50 TLM), is a lithographic map that portrays the greater detail of topographic and cultural information. Relief is shown by contours and spot elevations measured in meters. The map is a representation of terrain detail. Features are plotted to correct orientation and true location. The map depicts the level of detail required for infantry and reconnaissance units to navigate in various terrain environments including jungle, mountain, arctic, and desert.
The 1:50 TLM supplements a commander’s reconnaissance of his/her zone of action by providing basic terrain analysis information in sufficient detail to support Intelligence Preparation of the Battlefield.