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A description concerning such mechanism as will afford a nice or true mensuration of time; together with some account of the attempts for the discovery of the longitude by the moon as also an account of the discovery of the scale of music by John Harrison
The handwritten manuscript begins 'of the nature of a pendulum, as primarily implying in itself; and secondarily, as when, according to any particular manner (good or bad) in which it may be applied to the draught of the wheels of a clock & c.' The work includes annotations and notes in the left-hand-side margin. Some parts of the work have been additionally annotated in pencil seemingly at a later date.
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