This box is designed to house the Alexmos brushless gimbal controller board and allow access to all pins. Incorporated into the design is mounting with reinforcement to allow through bolting to the roll motor with a standard 16 x 19 mm pattern. Slots are provided that allows indexing at 90 degree intervals. This is suited for the Third Axis controller box that is secured by 3mm machine screws (nylon recommended). This holds the board in place while protecting the back side. M3 x .05 tap required to put machine screw threads into box. Only compatible with boards that are identical to or available here http://flyduino.net/Alex-Mos-Brushless-Gimbal-BLG_1 or here https://viacopter.eu/multirotor-shop/camera-gimbals/alexmos-gimbal-controller-and-imu-multicopter-store . ------------------------------ New version uploaded 18-SEP-2013 has blind fastener holes now changed to through holes for ease of tapping. Also text labeling has been added for pinouts of roll and pitch motors as well as external controls of roll and pitch.