I've spent a lot of time looking at their proposals and frankly I cannot see how it adds up, but fair dues Mike for having a go.
First off, the high resolution scanning. I've priced this for conservation survey work in the 9-5 world, and you'd normally get a 500mm resolution point cloud for about 5000 euro, no good for this type of work. I know that 5mm resolution can cost upward of 40,000, and that most of the cost is spent on converting the point cloud to usable data for a 3d model, so I'm not really sure how their sums add up. Second, you'd have to pay their flights, bed and board for the duration of the stay. And flexiscale don't scan the model, it's their partner company who make their living scanning oil rigs - where the sums make sense. You could cut out all that nonsense if you did all the measuring and CAD work yourselves.
While I applaud their efforts, they are producing a Shapeways/makerbot/i-materialise model and selling it to you, the only addition being that they've measured it. And cost - £28 for a little slate wagon?
We've had the row/chat about the quality of printed stuff, and I cannot see how you can get all that fine rivetted detail of 461, and a lovely glossy painted finish on the boiler with the fine printed grooves and be happy with it. It's asking for a more traditional resin/whitemetal/turned brass approach I would have thought.
However, if someone wants to give me bed and board, and a week alone in the summer with 461 I'll do 'ye a super detailed 3d model for free, and all the drawings of to paper yer house. All you need then is somebody to make the mould from it or print it from one of the 3d printer firms. Richie.