Our turn coordinators are very popular and can be found in many production aircraft around the world. They contain an electrically driven gyroscope which is supported in a gimbal inclined to the horizon so that the instrument senses roll as well as yaw.
The RCA82A/83A Series is an all-volt instrument that works from 11 to 30VDC. The turn motion is presented by an airplane symbol banking on a fixed horizon with a power warning flag.
RCA82A-11