Elements of the engine have been built over the last 173 years, but this would be the first complete working model of the machine.
"It's an inspirational piece of equipment," said Mr Graham-Cumming, author of the Geek Atlas.
"A hundred years ago, before computers were available, Babbage had envisaged this machine.
"What you realise when you read Babbage's papers is that this was the first real computer.
"It had expandable memory, a CPU, microcode, a printer, a plotter and was programmable with punch cards.
"It was the size of a small lorry and powered by steam but it was recognisable as a computer."
Link via blastr | Photo: Daily Telegraph
Previously: Andrew Carol's LEGO Difference Engine