Abstract: A device measures the operating angle of a universal joint in a drive train system without any physical contact with the components of the drive train system. The drive train system can include first and second shafts that are connected together by the universal joint. The device includes a first sensor for generating a first signal that is representative of the angular orientation of the first shaft relative to the horizontal and a second sensor for generating a second signal that is representative of the angular orientation of the second shaft relative to the horizontal. Each of the first and second sensors can include a pair of non-contact sensors, such as a pair of laser distance sensors, that are mounted on a base. A controller is responsive to the first and second signals for determining the operating angle of the universal joint.