Many of the laws in nature are purely mechanical, but not ultimately.

The storage was to be purely mechanical, using wheels and cards.

With the Salamanders to aid us, our work is purely mechanical.

The basic picture we need is a purely mechanical one.

It is clear from many instances that accuracy, in other cases, may be purely mechanical.

The marker is purely mechanical, with no electronic parts in its factory form.

All this goes towards making the tune a musical, rather than purely mechanical, exercise.

Such work was purely mechanical; it required skill, but no intelligence.

The process of setting up the figure for judgment is purely mechanical.

After two or three hours it became purely mechanical.