Here is a simple page to illustrate the tank wagon.
I measure the tank body diameter at 92mm, body length of 375, height off the rails to cylinder top at 130.
The photos were grabbed quickly so that there is something for you to see. I hope these give you the overall idea of the quality and detail on the model.
The springs in the truck frames are functional and allow around 2mm of movement.
The underneath of the frame is once more ready to take the alternative american style G1 coupler