Invar.
**E 5119.44
Benoit, Justin Miranda René, and Charles Edouard Guillaume, 1861—
La mesure rapide des bases géodésiques. 5¢ édition.
— Paris. Gauthier-Villars & cie. 1917. 285, (1) pp. Illus. Plans. Diagrams. Charts. Tables. [Bureau international des poids et mesures.] 22 cm., in 8s.
Measurement with invar wire.
This card was printed at the Boston mt) Public Library, July 13, 1920. Lo502 — Base lines. — Invar wire t. auth. — International Bureau of
Weights and Measures. Pubs.