As in any collection there are several items that do not come under any specific classification, or, as in this case, any specific scientific purpose.

Globes
The terrestrial globe, as a map of land and sea on the earth, has clear advantages compared with other types of map. Land masses are in their correct positions with respect to each other, they are the right shape, and in correct proportions. The disadvantage is that, as the scale rises, the globe becomes unmanageable. The largest ever made would have been eight metres (26 feet) in diameter when mounted.
The celestial globe, as a map of the heavens, is much less satisfactory. It is a model of the firmament, which has much to do with the imaginations of the ancients, with constellations, actually made up of stars at greatly different distances from Earth, all represented on one sphere. The mythical animals and people associated with the constellations, and the signs of the zodiac so loved of astrologers, are also usually illustrated.
Nevertheless, the two globes were commonly sold together, from the sixteenth right up to the late nineteenth century.
The map is printed flat on "gores" (usually 12) which are so shaped that, when pasted on, they make up the sphere. (These details are based on Van der Krogt 1984,7.)
The Maynooth globes were all made by the London firm of John Cary (c1754-1835) and his brother William (c1760-1825), major suppliers of quality globes around the turn of the eighteenth and nineteenth centuries.

Terrestrial Globe	Celestial Globe

Various other items