The South African Map Referencing System (Grade 10 NSC Matric Geography): Flashcards
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Topographic map definition
Topographic map definition
Map showing natural & human features drawn to scale
NGI full form
NGI full form
National Geo-spatial Information
Scale of SA topographic maps in the system
Scale of SA topographic maps in the system
1:50 000
Size of large grid squares (lat × long)
Size of large grid squares (lat × long)
1 degree × 1 degree
Size of smaller map subdivisions
Size of smaller map subdivisions
15 minutes × 15 minutes (15' × 15')
Corner used for map reference coordinates
Corner used for map reference coordinates
North-west corner
First coordinate in map reference number
First coordinate in map reference number
Latitude (north-south position)
Letter pattern for subdivisions (starting point & order)
Letter pattern for subdivisions (starting point & order)
A, B, C, D clockwise from top-left
Position of letter B in subdivision
Position of letter B in subdivision
Top-right (north-east)
Two letters in map reference (e.g., BB)
Two letters in map reference (e.g., BB)
1st: quadrant position, 2nd: subdivision within quadrant