Shipto - not sure what it was to be honest - it was my grandads and he had some theory it was and ex-military machine but I never looked at it that closely. It was a pretty heavy casting for its size. Perhaps Jon will find some markings or something when he gets it cleaned up.
I remember using it with grandad - you need to change arms every now and then or its knackering. Thinking about it, I was being used for cheap labour!
