Excerpt from A Precision, High Frequency Calibration Facility for Coaxial Capacitance StandardsSuch a practice has been a necessity because of the wide variation in the types of impedance standards being used throughout the country. In many situations, clients have manufactured their own standards because appropriate commercial standards were unavailable. A second reason that standards vary so much has been the nonuniformity in connectors. For example, nbs has performed calibrations of standards equipped with banana plugs or binding posts with spacings which vary from to 2 This, of course, is indicative of the variation which exists between various commercial instruments and presents some difficult problems in correlating measure ment data between instruments with dissimilar connectors.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.