Calculated Industries 4090 - Manual (Page 2)

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The custom-designed ITI Sheet Metal/HVAC Pro calculator was
specifically created for sheet metal pro’s to ease the task of perform-
ing mathematics on the job. It includes the most popular built-in for-
mulas for sheet metal computations, so you’ll save time, increase
accuracy and eliminate errors.
Your Calculator Helps You Solve:
• Dimensional Math Problems
• Conversions Between Feet-Inch-Fractions, Decimal Feet,
Decimal Inches and Metric
• Problems Involving All Common Fractions – 1/2” to 1/64”
• Area/Volume Calculations
• Arc/Circle/Column/Cone Areas and Volumes
• D:M:S
• Scientific Notation, Cubed Root
• Offset Calculations
• Trigonometry
• Law of Cosines
• Fan Laws 1, 2 and 3
• Velocity/Velocity Pressure Conversions
• Right Angle/Rafter Solutions
• Stair Layout (Risers/Treads), and more!
It also includes handy construction math and material estimation
examples — such as right angle/rafter and stair calculations — that
will also help you build faster and more accurately.
INTRODUCTION