Mystery Picture

IN days of old when the farming industry workforce was in the hundreds of thousands rather than the tiny number employed these days, this was a common sight in the fields. It looks like a funny contraption now but it served its purpose. Name the implement

IN days of old when the farming industry workforce was in the hundreds of thousands rather than the tiny number employed these days, this was a common sight in the fields.

It looks like a funny contraption now but it served its purpose. Name the implement and then all you have to decide is the location of the pub.