The Ferranti FH7Z artificial horizon is similar to the Ferranti MK6, but also had the option for integral turn and slip indicator display with an external sensor. This sensor is not available. However the instrument performs well as an artifical horizon.
The horizon features electrical fast erect, power fail flag together with roll graduations at 30,60 and 90 degrees. The horizon has full 360 degree movement in roll and upto 80 degrees in pitch before toppling occurs. Should toppling occur due to reaching this extreme pitch angle, the fast erect mechanism can be used to quickly re-erect the gyro.
Each instrument is supplied with a new inverter housed in a diecast box together with screw locking connectors for all power leads.
Dimensions 80mm dial with
fixed datum
Length 230mm
Fixing centres 94mm across diagonal
Weight 2.7kg
Fixing screws M4
Inverter Dimensions 95
X 120 X 60mm and weight 1kg