The BBC (British Broadcasting Corporation) is making plans for new buildings in various cities of he UK. It might be a good idea to get the plans checked over before work starts.
When the current Broadcasting House was built, it was decided that an in-house concert hall with room for an auditorium would be a good idea. Not a huge hall, but certainly with enough space for chamber orchestras and piano recitals.
Grand pianos need a fair-sized doorway to put them into place. To make sure that the entrance to the concert hall would easily facilitate this, engineers designed a wooden mock-up of a grand piano to be built in the workshop, from where it could be transported into the concert hall.
The mock-up was carefully measured, tweaked and twisted until it was as close to a real piano as possible, a fine example of the carpenter’s art.
The moment came to transfer it to the concert hall.
You’ve guessed it, the mock-up was too large to fit through the doors of the workshop.