Mike, you're right but at the moment, I'm having to improvise with the tools I've got. I couldn't find my 1/2" 13mm socket which was why I used the step up combination but plus points for Draper Tools as their small socket held firm. I have 1/4", 3/8" and 1/2" socket sets and various ring spanners.
Having later found the 13mm 1/2" socket, it will fit, but there's no space to fit any thing to drive it with ( even with a universal joint) plus 13mm and 1/2" ring spanners are slipping.
I've put the torque wrench back in its protective tube!
Malc
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