What is this for?

vendredi 11 décembre 2015

I have been asked to find out exactly what this welder is and if it has any value. It came from a friends place and he was in a band and plays electric guitar and was in the armed forces. We had lots of ideas of what it could be but can anyone help us out? I understand it is missing some leads.20151212_125058 (2).jpg 20151212_125108 (2).jpg
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