Excerpt from British Standard Specification for Copper Tubes and Their Screw Threads: Primarily for Domestic and Similar Work The standardisation of Copper Tubes was first considered in connection with a Report made by the late Mr. Henry Lea to the Sectional Committee on Screw Threads and Limit Gauges in October, 1911. The consideration of this subject, together with the question of standardising Union Joints and other Tube Connections, resulted in the appointment of the sub-committee on Metal Tubes and Connections, which appointment was confirmed by the Main Committee on July 18th, 1912. The sub-committee have adopted British Standard Pipe Threads for the heavier Gauge Tubes, and the recommendations of the Sectional Committee on Screw Threads and Limit Gauges as to the gauging of Pipe Threads have been largely followed in this Report. In drawing up their recommendations, the sub-committee availed themselves of the information previously obtained by the Joint Committee on Screwed Copper Pipe Standards appointed by the Institution of Heating and Ventilating Engineers and the National Association of Master Heating and Domestic Engineers, and they desire to record their appreciation of the information placed at their disposal by the Joint Committee and of. The pioneer work undertaken by them. 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.