HOROLOGICAL LUBRICANTS

The subject of Horological Lubricants is one which has received very little attention in Lubrication literature. The erroneous tendency to consider that only machinery operating in very high temperatures under difficult conditions of pressure, loading or atmosphere, requires specialist lubrication care, is undoubtedly the reason for this. But the correct functioning of essential time pieces, as well as all small scientific instru‐ments, can be as vital as that of a large machine. The author had been interested in these matters for a number of years when Chief Chemist and Technical Director of Rocol Limited, in whose laboratories many of the advances described in this paper were first evolved and who have given permission for this paper to be published. This paper summarises much of the work carried out on Horological Lubricants over the past twenty‐five years.