Now that we are all through that, here is the last kind of controller which was optional in Baldwin and Baldwin-Lima-Hamilton locomotives. It is difficult to find an actual Baldwin manual which shows this controller, so I've used my Lima-Hamilton manual 1200STD, for 1200 HP Diesel-Electric Switching Locomotives. This is the Westinghouse XM-781 controller. It is an eight-notch electric throttle.There you have it; all of the variants of Westinghouse throttles used in Baldwin and Baldwin-Lima-Hamilton diesel-electric units postwar. Hopefully, this page will clear up a lot of confusion about this kind of equipment in the railfan world!