IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This clock dates from the 1930s, when ...

The Model VS-SP is a vane type waterflow switch for use on wet sprinkler systems. These devices may be used as sectional flow indicators on large sprinkler systems and on smaller... Potter’s PFC-6000 ...

Anyone who finds it hard to get out of bed in the morning, and needs a little more help than just an alarm clock, may be interested in a new wearable electric shock alarm system that literally shocks ...

Article 760 covers the installation of wiring and equipment for fire alarm systems, including circuits controlled and powered by the fire alarm. Those circuits are for such things as fire detection ...