I have an aged but perfectly serviceable Sunpak 3600 hammerhead flashgun. I say that, but I've actually only got 95% of one! 
The sync lead is missing so it cannot be used. I took a chance and ordered one off ebay but it was a 3.5mm>PC lead and the Sunpak looks as if it takes nearer a 2mm size lead. Has anyone got one of these flashguns and if so, could you measure the diameter of the jack plug for me? Thanks! 
The sync lead is missing so it cannot be used. I took a chance and ordered one off ebay but it was a 3.5mm>PC lead and the Sunpak looks as if it takes nearer a 2mm size lead. Has anyone got one of these flashguns and if so, could you measure the diameter of the jack plug for me? Thanks!