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Since the middle of the last century,
the finest instrument oils were derived from high-grade whale oil. Such
oils had high viscosity and superb resistance to both oxidation and gumming.
They also had superior film strength on metal surfaces. Today, Federal
law prohibits use of marine mammal oils. Fortunately, it has been found
that jojoba beans produce oil of a similar molecular structure. This oil
has been combined with synthetics to produce Nye Clock Oil 140B. It brings
back the qualities of the old whale oil, and is the finest instrument oil
available today. It is highly recommended for sextant lubrication. It is
packaged in a 1/4-ounce bottle.
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