My modelist brother is interested to know how these ladders were used. Basically as a stand alone unit or linked to the truck all the time?

I could not find anything close to it in the Web. Any idea?

 

There's a ladder here off its truck that looks very similar.

 

There's a ladder here off its truck that looks very similar.

Yes!! Thanks

 

There's a ladder here off its truck that looks very similar.

And here is in action (UK).