Excerpt from News Briefs, Vol. 99: Journal of Research of the National Institute of Standards and Technology; March-April 1994 In their quest to build cleaner cars, automobile manufacturers require advanced measurement methods to precisely monitor what goes in and comes out of a car's engine. A new, nist-devel oped automated microwave Spectrometer that can analyze trace gases quickly and accurately with very high sensitivity may fit the bill. Among the instru ment's potential applications are monitoring auto exhaust, factory emissions and industrial processes. The nist device can accurately measure gases in concentrations as low as 10 parts per billion. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.