Gt. Brit. Commissioners of Longitude. Rare Boos
Derr. Harrison, John, 1693-1776.
*XfE The principles of Mr. Harrison's time-keeper,
«T6T « with plates of the same. Published by order of -H2kp the Commissioners of Longitude.
London: Printed by W.Richardson and 8.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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