a. [f. as prec. + -AL.] = prec.
1838. in Proc. Amer. Phil. Soc., I. 51. Sextant constructed for the chronometrical survey of Massachusetts.
1845. Darwin, Voy. Nat., i. (1879), 1. To carry a chain of chronometrical measurements round the World.
1864. H. Spencer, Illustr. Univ. Progr., 142. Our chronometrical measurements of astronomical periods.
Hence Chronometrically adv.
1863. Reade, Hard Cash, I. 225. They would find the hot fit and the cold return chronometrically, at intervals as regular as the tide’s ebb and flow.
