Which scale measures the amount of damage after an earthquake?

Richter scale

Mercalli intensity scale

moment magnitude scale

seismograph scale

The scale that measures the amount of damage after an earthquake is the Mercalli intensity scale. First developed by Italian seismologist Giuseppe Mercalli in 1902, this scale quantifies the intensity of an earthquake based on observed effects rather than on instrumental measurements. It is a subjective scale that ranges from I (not felt) to XII (total destruction) and considers factors such as the impact on structures, human response, and the overall impact on the environment. The Mercalli intensity scale provides valuable information about the effects and damage caused by an earthquake, helping researchers and engineers to assess its impact and plan for future seismic events.

http://en.wikipedia.org/wiki/Mercalli_intensity_scale