Reference and Guides

Construction Book Express Offers Updated National Electrical Code Handbooks

10 Feb 2012

The National Electrical Code (NEC) was developed to provide a set of codes and standards with the intention of protecting the safety and health of electrical industry professionals and the general public

New Heavy Duty/Industrial Damper Catalog from Greenheck

9 Feb 2012

A 24-page catalog showcases Greenheck's line of heavy duty and industrial dampers. Control, round control, isolation, backdraft, pressure relief, tunnel ventilation, smoke and blast, and bubble tight damper models are detailed. The catalog's easy-to-use format features quick-reference guides for model selection, and also includes construction features and options with in-depth information on ...

Alarming Increase in Fake Makers Marks on Porcelain and Chinaware - Reproductions of Chinese Antiques on the Rise

9 Feb 2012

The team at http://www.Marks4Antiques.com just uploaded their latest database for the Ceramics dictionary of marks service for their online antiques reference guides. After compliling and sorting through thousands of new porcelain and chinaware backstamps that were added, they were amazed to notice a sudden increase in the number of fake or reproduction marks found on porcelain vases or ...