Excerpt from Catalog Technical Supply Co: Mathematical Instruments and Drawing Materials As a result of such serious consideration, the Tec Line today stands alone. It stands for quality. It is further. Backed up with a trade mark that in itself is a sufficient guarantee to cover any peculiar requirement that might arise. We have endeavored to be brief, yet comprehensive, in the descriptions of our goods and at the same time truthful and conservative in our claims for their respective qualities. We make this claim for originality ln the make-up of our catalog: every page has been made up and printed in our own establishment, and every cut and engraving is a faithful representation of the goods ln our stock. The trade mark tec stands for quality; the longevity, wear, and honesty of a product rather than its low price, but our price will be as low as large purchases can make it; not as low as cheapening the product can make it. 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.