The next step is commonly undertaken with some sort of mechanical instrument to further refine the shape and add detail.

During this time period, Wren manifested an interest in the design and construction of mechanical instruments.

Some information about how music sounded in the past can be obtained from contemporary mechanical instruments.

It was, of course, dead black: a mechanical, self-winding instrument that seemed dull but expensive.

Schott is most widely known for his works on hydraulic and mechanical instruments.

Unique collection of mechanical musical instruments presented in a spectacular show.

From 1891 on, the firm produced also mechanical musical instruments.

An equivalent to a push-button as found on mechanical or electronic instruments.

A music roll is a storage medium used to operate a mechanical musical instrument.

From 1832 until 1932, the firm produced mechanical musical instruments of the highest quality.