Detailed Tilly crane boom as used on US Navy carriers in the 1960s, 70s, 80s and 90s. An open cab is also included. Designed to fit 3D printed Tilly crane vehicle:
https://www.shapeways.com/product/7573F3985/1-350-scale-ns60-tilly-crash-crane-with-no-boom?optionId=57410285&li=marketplace