e-Toolbox
Handy Web-based tools
 

• NIST Atomic Clock. Set your time to "world's most accurate clock". Great for computers and coordinating
  time critical equipment.
  http://www.time.gov

• Torque Calculator (Standard Bolt Series).
  Fastener torque calculations done for you quickly. Just enter info and tightening torque is calculated.
  http://www.assemblymag.com/toolbox/torque

• Torque Calculator (Non-ferrous threaded fasteners). Fastener torque calculations done for you quickly. Just enter info and tightening torque is
  calculated.
  http://www.assemblymag.com/toolbox/torque2

Conversion Calculators

Temperature Units - Convert among Celsius, Fahrenheit, Kelvin, etc.

Engineering Units - Convert among various engineering units.

Heat Index Calculator