Servos 1603-Pan/Tilt/Roll Mechanism_Spec-RevA.pdf 1615-Pan/Tilt with 180MG Pan Servo_Spec-RevA.pdf 2612-9g Tilt/Roll Servo for Pan/Tilt/Roll only_Spec-RevA.pdf 2613-9g 180MG Pan Servo for PTR_Spec-RevA.pdf