The Earth is not a true sphere, and therefore has three orthogonal axes of inertia.

The output for the orientation tensor is in the three orthogonal (perpendicular) axes of space.

Massive wheels are mounted in three orthogonal axes aboard the spacecraft.

This sensor provides orientation with respect to the earth about two orthogonal axes.

The most common scenario, where simultaneous rotation around three orthogonal axes can be observed is when performing measurements with a gyroscope.

The trough is parabolic along one axis and linear in the orthogonal axis.

The two variables are plotted on two orthogonal axes.

Each axis correlates only to itself and nothing to the other orthogonal axes.

The pen is mounted on a carriage that moves back and forth in a line between the grit wheels, representing the orthogonal axis.

Its vertices are constructed from 3 orthogonal axes.