Of the unequality of natural time, with its reason and causes. : Together with a table of the true æquation of natural dayes. Drawn up chiefly for the use of the gentry, in order to their more true adjusting, and right managing of pendulum clocks, and watches. /
Smith, John,active 1673-1680.
London : Printed for Joseph Watts, at the Half-Moon in St. Paul's Church-Yard,
1686.
First leaf bears advertisement and imprimatur on verso.
Wing (2nd ed.)
Microfilm.
Horology
Clocks and watches
England London.