It is an odd scale as I've based it on Quint being 8" from 5'10" so I've reduced my full-size models by 0.114flimzy, Can i ask what the dimensions of your bruce are?
that gave me a Bruce of 34.2" if it was 25ft.
I have worked in Imperial only because any hardware would have been in feet and inch's. but the day America finally lets go of that antiquated
measuring system a tiny squeak of joy will fill the air. you could start slowly and follow your military and arms industry and buy tape measure with both metric and imperial. sorry rant over.