Answers when you need them
When you need to check specs, confirm measurements, or make a quick
metric conversion on the job, find the answers quickly and easily--right
in your pocket.
Your one-stop reference for
* Conversion tables, electrical formulas, pipe thread standards, and
motor ampere ratings
* Fuel cost comparisons
* Offset calculations and valve details
* Gas and oil burner specifications
* Pipe performance data
* Weather and design factors affecting heating/cooling calculations
* Troubleshooting guidelines