Information requested re British "crane" diagram

[taff]

I recently visited Burma and saw this enamel sign on a shop wall. The owner knew nothing about it other than "it was old"

I took a few photos of it and was wondering if anyone could tell me anything about the diagram or the "crane".

All I know is that it is marked with a British "Broad Arrow".

Thanks,

Taff

[taff]

pics 3 & 4

[garys39]

Hi Taff
I think the store and Ref No are RAF references.
Regards
Gary

[taff]

Thanks Gary. Could this possibly be something to do with aircraft wheel assembly?

[byterock]

General purpose up to the weight specified me thinks.

I think this model had any number of jigs, airo-engine, prop, etc,

[taff]

So this assembly could be used to move aero parts around and be towed as well. Any ideas as to age ?

Taff