A collection of papers concerning horology and clockmaking. It includes correspondence between Ernest C. Atkinson and a range of people connected with horology and timekeeping, including Humphry Smith and other members of the RGO’s Time Department. The collection also includes pamphlets, leaflets, papers and booklets, brochures for watch sales, admiralty notices to mariners re time signals, sets of notes, graphs and calculations, and a small number of photographs of clock parts.