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How to calculate gradient between two points on a topographical map

Answer Text:
CALCULATION OF GRADIENT
Gradient is the steepness of a slope between two given points
1. Identify the two points
2. Calculate difference in height between the two points (Vertical Interval) e.g. 500m
3. Joint them with a light line
4. Measure ground distance between the two points
(Horizontal Equivalent) e.g.12 cm
- Assuming the horizontal scale is 1: 50 000
G=V. I./H.E.
=500 mX100 cm/12X50000=50000/600000=1/12=1:12
Interpretation
For every 12 m travelled on the Ground, there is a vertical rise of 1m