1 Hammerman's HQ is a red and gray structure with a red door, four rooms as corners, and a second floor with an antenna.  Dr. T's HQ has a similar design to the level 11 HQ, but the windows and crates are replaced with two green pipes. Instead of a satellite, a rotating porthole-like structure is located on top.
The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the Earth 's surface, which forces scale to vary across a map. Because of this variation, the concept of scale becomes meaningful in two distinct ways.
Scales are frequently featured in map legends (tables explaining the meaning of symbols, signs colours and abbreviations used on a map). In these legends, the scale is often in the form of a linear scale (or line scale). A linear scale is a horizontal line which is divided into sections. It shows how measurements on a particular map correspond with measurements on the ground.