Although Brunton professional instruments are renowned around the world for their extremely high accuracy, they are still limited to the skills of the user, such as shaking hands, tiredness etc. The Brunton non magnetic tripod address this issue, and this 'ball and socket' adapter will be needed to allow you to fit the compass to the tripod.
The mounteasily screws on to the Brunton tripod. The top part of the mount has two runs in which you can 'slot' certain Brunton instruments into (see list below). A screw on the side allows you to keep the instrument firmly in place, while the actual ball and socket joint allows you to position the instrument in any direction or angle. The mount is made from non magnetic materials to ensure zero chance of interference.