Part Number: 16528-0 (Gyrosyn compass)Part Number: 16529-0 (Gyrosyn compass)Part Number: 16994-0 (Gyrosyn compass)Part Number: 1777215 (Gyrosyn compass)Part Number: 2587193-27 (Gyrosyn compass)Part Number: 2587193-34 (Gyrosyn compass)Part Number: 2587193-41 (Gyrosyn compass)Part Number: 4020577-32 (Gyrosyn compass)Part Number: 6538972B (Gyrosyn compass)Part Number: 673447673447A (Gyrosyn compass)