This is a lightweight crane, based on industrial rather than goods yard cranes.  It'd see it in a loading bay of a factory.  The model includes a hook, and some cable (as shown in the diagram).  The hook and cable will need attaching, and it'll need final painting.

Overall dimensions (mm and scaled up in metres)

Height: 96mm (7.3m)Boom length: 108mm (8.2m)Main column height: 52mm (3.9m)Reach: 70mm (5.3m)

This is a model I've made for my own use, I'm a hobbyist rather than a business and I want you to enjoy my model.  If you have problems whatsoever with it, let me know and I'll sort it out.

There's also a smaller version, for OO9 layouts here https://www.ebay.co.uk/itm/305024403981