The Castleberry 300-14EL can either be used as a
primary attitude indicator, or when used with the
EPU28-24RMT Emergency Battery, a back-up
attitude indicator giving you that welcome margin of insurance in case of power failure. The 300-14EL is even FAA certified to replace the turn coordinator, freeing up panel space and has a power failure warning flag.
**Inclinometer sold separately.