Summary

Here's a file for a small electric tractor. It is drawn full size so scale to suit your model.

Tractors like this were found at factories, depots, railway stations and military establishments for moving goods and supplies around the site. Similar examples to this were around during WW2 and were certainly around for decades post war. I have drawn this model from measurements taken from a prototype sitting in a local reclamation yard.

Enjoy

Jonny