Recommended Links

Power Equation Calculator
http://www.sengpielaudio.com/calculator-ohm.htm

Track a UPS Package

http://www.ups.com/tracking/tracking.html

Track a FedEx Package
http://fedex.com/Tracking

Convert Just About Anything to Anything Else
http://www.onlineconversion.com/

Tools and Basic Information for Design, Engineering and Construction of Technical Applications

http://www.engineeringtoolbox.com/

International Society of Automation (ISA)
http://www.isa.org/

InTech Magazine (An ISA Publication)
http://www.isa.org/InTech

ISA Will-DuPage Section
http://www.isawilldupage.com/