G'day Mark,

Pete M mentions that 'Footprint' is a brand of tools and he is correct. In the song, I believe that anyone working in that time and place would recognise the reference as a 'Footprint spanner' ... an early variety of what we Aussies call a 'shifter' or 'shifting spanner' but is possibly known as a 'monkey wrench' in America.

Regards,

Bob Bolton