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Maskelyne, Nevil, 1732-1811,
Harrison, John, 1693-1776.
The principles of Mr. Harrison's time-keeper, with plates of the same. Published by order of the Commissioners of Longitude.
London: Printed by W.Richardson and S.Clark;
and sold by John Nourse,and Mess.Mount and ‘Page. M DCC LXVII. C1767]
xvii,C191-31 p. x pl.(1 fold.) 24.5x30cm. (obl. fol. )
Preface and "Notes taken at the discovery of
Mr Harrison's. time eeper" by Nevil Maske- lyne: p.v-xvii.
 
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