Name/Title
Chemical Scale of EquivalentsEntry/Object ID
2013.3.12Description
This scale measures about two and three-quarters inches wide. The main body of the scale which bears the names of both elements and compounds is about nineteen inches long. This body of the scale is divided lengthwise by a sliding logarithmic scale numbered from 8 to 330.
The face of the scale bears the following heading or title, "Improved Scale of/ Chemical Equivalents/ By Lewis C. Beck and Joseph Henry/ Albany 1828/ Second Edition." The reverse side is solidly printed with directions for the use of the scale. The directions start as follows, "The scale of Chemical Equivalents, the invention of which is due to Dr. Wollaston, is an instrument stamped with the accuracy and ingenuity of its author, and which has contributed in an eminent degree to facilitate the general study and practice of chemistry. The present scale differs from the original one, in the assumption of Hydrogen as the radix or unity."Collection
Moosnick Museum - Scientific Apparatus
