BACHMANN, STREAMLINED CABOOSE W/OFFSET CUPOLA, WABASH #2824, HO SCALESTREAMLINED CABOOSE WITH OFFSET CUPOLA WABASH #2824 Model: 14002 Shipping Weight: 0. 6lbs Scale: HO 1: 87 STREAMLINED CABOOSE WITH OFFSET CUPOLA WABASH #2824 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 perch while