A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 609
BAROMETER. 569 higher, it is attached to the stand by a ring, inwhich tlie frames turn round with a smooth andsteady motion, for the purpose of placing the in-strument in the beFt light for reading off, &c.The actually divided scale commences at aboutfifteen inches above the zero, and is…
Encyclopedias and dictionaries · Aeronautics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.