i thought the topic was steam....
That is a nice engine you have! What gauge is it?
The Berkshire is 7½" gauge, 1:8 scale. oddly with the same scale/ gauge error as traditional O.
this guy is 1" scale, 4¾" gauge. one of the more accurate live steam gauges.
How many large live steam loco's do you have! Amazing!
Regards
Fred