BACHMANN, STREAMLINED CABOOSE W/OFFSET CUPOLA, BURLINGTON #13530, HO ScaleSTREAMLINED CABOOSE WITH OFFSET CUPOLA BURLINGTON #13530 Model: 14001 Shipping Weight: 0. 6lbs Scale: HO 1: 87 STREAMLINED CABOOSE WITH OFFSET CUPOLA BURLINGTON #13530 HO Scale. The original design of the Streamlined (sometimes called Offset) Caboose was built by the Wabash Railroad in the early 1950s. The most common form was a small windowed projection on the roof, called the cupola. The crew sat in elevated seats to inspect the train from this