Ritchie SS-1002W SuperSport Compass - Flush Mount - White [SS-1002W] Brand_Xantrex the SRA-1's zero position is

the SRA-1's zero position is at six o'clock

or use a Shakespeare Style 410-R Mounting Kit plus a Style 4008 Extension Mast to form a 16' antenna system

Nylon ferrule with standard 1"-14 thread

This configuration has the advantage of being more intuitive

Ritchie SS-1002W SuperSport Compass - Flush Mount - White [SS-1002W] Brand_Xantrex the SRA-1's zero position isSuperSport Compass Developed for and tested on offshore race boats the SuperSport Series compasses feature the PowerDamp Plus dial. This dial technology features the PowerDamp? dial skirt to prevent oscillation, larger DirectiveForce magnets for quick lock on and extra large steel pivots and jewels for smooth fast action. Features 3 3 4 (96 mm) PowerDamp Plus, High Visibility Blue Open Face Dial with Extra Large White Numerals Easily Installed, Fits 4