This is the HSI Indicator (with bootstrap output) from the KCS-55A Compass System. This will be of primary interest to those who need a replacement KI-525A, or who are assembling a KCS-55A System and already have the other components. This item is just the HSI Indicator. If you need the complete Compass System, please see these links for the KCS-55A both with and without bootstrap output:
If you have a KI-525A, please contact us to discuss its possible core value.