Hi Meldonmech, Welcome to Madmodders and I am glad you did that post
, I thought to myself I will have to make one of them , then thought , hang on that looks familiar , so have sorted through a tool draw in the workshop and found I already have a whitworth version of one
a car boot find from ages ago but I never really knew what it was used for
................ as the old saying goes .............. 'you learn something everyday'
.... I wont be too smug as I will still have to make a metric version lol
cheers Mick.