shows reference to earthquake vibrations as classified by Mercalli intensity scale.
Vibrations are shown in all directions: X, Y, Z in different colors.
Place your device on stable surface and measure vibrations.
Mercalli intensity scale
I. Instrumental - Not felt. Recorded by seismographs.
II. Weak - Rarely felt, usually only on top floors of high buildings.
III. Slight - Felt indoors, like a passing light truck.
IV. Moderate - Windows, dishes, doors rattle. Like passing train.
V. Rather Strong - Felt by all. Small objects upset.
VI. Strong - Books off shelves. Trees shake. Isolated damage.
VII. Very Strong - Difficult to stand. Many poor buildings damaged.
VIII. Destructive - Significant damage. Branches broken from trees.
IX. Violent - General panic. Serious damage. Ground cracking.
X. Intense - Most buildings destroyed. Rails bent slightly.
XI. Extreme - Rails bent greatly. Pipelines destroyed.
XII. Catastrophic - Near total damage. Objects thrown into the air.