more research

i found a little more information about the globe

"The creator ... James Wyld Jr. (1812-87), was trained for a military career but at age eighteen (around 1830) became involved in his father's cartographic firm. It was during the Great Exhibition of 1851 in London that the younger Wyld became a household name. He had leased a part of Leicester Square and constructed his "Great Globe" or "Model of the Earth," the largest globe made to that date, measuring almost 19 metres in height and approximately 12 metres in diameter. The interior, which delineated the physical features of the Earth, could be viewed by the public using stairways and galleries. Visitors were also able to view an exhibition of various products of the Wyld firm, terrestrial and celestial globes of various sizes included."

Dahl, Edward H.. Sphaerae Mundi : Early Globes at the Stewart Museum.
Montreal, QC, Canada: McGill-Queen's University Press, 2000. p 102-103.

i'm not quite sure whether the mesurements mean the actuall globe is deformed meaning it will be slightly stretched vertically. Also i found out that the space th people were waiting to queue in was also a gallery for other globes Wyld's firm created.

Edit: i found another snippet of information in the form of a rant in an issue of a Manchester newspaper from a reader complaining about the inaccuracy of a previous comment.