Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 17
ch end, and thus necessarilypreventing the slightest displacement. The observer next proceeds to read off the indications furnished1 by the two scales of the instrument; he sets first down the numberson the left-hand scale R, which come opposite to the top fine oJthe fluid on the left-hand side,… … Left altitude beRight altitude The sum divided 46 2047° 40 2)94 Would give for the desired altitude 47° The necessity for taking a mean of the two readings arises fromthe liability of the fluids to expansion, for were no change to takeplace in their thermoiuetrie condition after the contact, the…
Mechanical engineering · Mechanics · Engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Declaration de l'vsage du graphometre : par la pratique duq[ue]l l'on peut mesurer toutes distances des choses de remarque qui se pourront voir et discerner du lieu ou il sera posé : et po[ur] arpenter terres, bois, prez, & faire plans de villes et forteresses, cartes geographiques, & generalement toutes mesures visibles : et ce sans reigle d'arithmetique (1597)](https://img.insideoutlibrary.com/img/200/ia-declarationdelvs00danf-12-3.webp)