info@buecher-doppler.ch
056 222 53 47
Warenkorb
Ihr Warenkorb ist leer.
Gesamt
0,00 CHF
  • Start
  • Annual Report of the Naval Observatory, 1917 (Classic Reprint)

Annual Report of the Naval Observatory, 1917 (Classic Reprint)

Angebote / Angebote:

Excerpt from Annual Report of the Naval Observatory, 1917 The error in correcting the transmitting clock to agree with the assumed error of the standard is never more than 0.02 second. The new switchboard referred to in the last annual report has been installed and was first used on April 15. When circumstances permit, chronometers and torpedo-boat watches are withdrawn from service for cleaning and necessary repairs every four years. There are now only three firms in America who undertake this work. Chronometers are also cleaned and repaired at the Mare Island Yard and at the Naval Observatory. The observatory employs an expert in this line, and is in a position to handle the work expeditiouslv and cheaply, but in small numbers only. It is the policy of the observatory to give enough repair work to the commercial repairers to keep together their force of workmen and to keep up the standard of their work. Due to the high cost of material and labor, the Bureau of Navigation has advanced the price to be paid in future for navigational timepieces. American manufacturers of watches have not yet succeeded in producing in any quantity timepieces that will pass the test for torpedoboat watches. Improvement is shown, and arrangements are being made to induce other manufacturers to compete. 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.
Folgt in ca. 5 Arbeitstagen

Preis

20,90 CHF

Artikel, die Sie kürzlich angesehen haben