Users' questions

What do the numbers 25 and 27 mean on the map of Rustenburg?

What do the numbers 25 and 27 mean on the map of Rustenburg?

In this case Rustenburg West n is the title and 2527 CA is the code. The map code shows that the map is in the vicinity of the coordinates 25°S; 27°E. CA is used to distinguish all maps within the area of 1°latitude X 1°longitude. Each small square represents a map sheet.

How South African topographical maps are Standardised?

Each 1: 50 000 topographical map covers an area of exactly 15′ of latitude by 15′ of longitude. Both the six digit alphanumeric identifier and the name is unique across the entire 1: 50 000 topographical map series.

What does 2530 on the map title stands for?

Nelspruit – Chief Directorate
Chart 2530: Nelspruit – Chief Directorate: National Geo-spatial Information – Avenza Maps. For Government & Military.

How do you find the scale on a topographic map?

All topographic maps provide information on the scale of the map, usually at the bottom of the map sheet. The scale is the ratio of distances on the map to distances on the ground.

What is the contour interval on a 1 50000 topographic map?

20m interval
The 1:50 000 topographical maps are the largest maps providing full coverage of South Africa. The series consists of a total of 1 913 sheets. They accurately depict the location of natural and man-made features by means of symbols and colour, and elevation by means of spot-heights and contours (20m interval).

Which scale is bigger between orthophoto and topographic?

The topographic map has a scale of 1 : 50 000 while the orthophoto map has a scale of 1 : 10 000. This means that the orthophoto map will show a feature to be 5 times larger than the same feature on the topographic map.

What is the contour interval of topographic map?

A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map. Usually there are different contour intervals for the different maps. Considering the size of the area to be mapped, contour intervals are assumed.