How do these tables actually rotate?

The mechanism relies on a central vertical pivot combined with concealed ball bearings or wooden runners fixed between the rotating upper compartments and the stationary base. This hidden engineering allows the entire body of shelves to spin effortlessly in either direction while remaining securely anchored to the heavy pedestal below.

What is the difference between a floor and tabletop model?

Floor-standing variants are larger, self-contained pieces of furniture designed to rest directly on the floor beside a desk or armchair to hold substantial reference libraries. Tabletop models are scaled down significantly, featuring a flat base intended to sit upon a larger cabinet, sideboard, or partner's desk for immediate access to daily reading.

How were these used historically?

Victorian and Edwardian readers placed these revolving units in studies, libraries, and drawing rooms to keep encyclopedias, poetry, and current novels close at hand. The rotational design meant a person seated in one spot could access multiple vertical rows of books without needing to stand up or walk across the room.

How do I care for the timber surfaces?

Maintenance requires occasional application of a traditional beeswax to nourish the antique wood and preserve the natural lustre of the polished mahogany or walnut. Direct sunlight and extreme humidity fluctuations should be avoided to prevent the timber veneers from lifting or cracking over the lifespan of the piece.