This kit will make a simple gantry crane for moving modest sized loads.
The span is 85mm, the bases for the A-frames are 50mm and the height is 54mm.
With careful construction, the crane can be made to move along the spanning girder,
allowing you to pose the crane in different places.
To give an idea of scale, this photo shows the crane with an N Gauge Society Mullet
bogie track carrying wagon.