This is a bracket to mount your electronic compass on and keep it away from any metal.  The bracket is made from laser cut acrylic and it mounts to a nylon mast.  The hardware that mounts the electronic compass to the bracket is also nylon and included with this item.  The non-metallic materials are used to keep the sensitive electronics away from any metal and electronic noise that will influence the readings.  Follow this link for assembly instructions.

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Assembled Electronic Compass Bracket and associated hardware	Compass and Bracket assembled on a Trekker.