Organic material from the trunk, branches or roots of a tree, it is regularly used in watchmaking for tools and sometimes for the final product.

At the tooling level it is often used as a support on which to work metal parts. It is also used to make tool handles such as file handles for example.

The texture of certain woods, such as pear, is favored for making worm wheels that polish the teeth of sprockets. Dried elderberry root is also sometimes used for the final touch up of a polishing.

Elderberry pith is also used mainly for cleaning when soaked in a little ground benzine. Boxwood is also used to hold pieces and sometimes also to polish.

Clocks, and sometimes even pocket watches up to their balance springs can be produced in wood. When large clocks are made of wood their pivots are often barrel shaped to fit the natural movement of the overall wooden structure.