Calculated Industries 4087 User Manual - — 1

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The Machinist Calc™ Pro Advanced Machining Math and 

Reference Tool (Model 4087) provides fast, precise solutions for 

your every day machining calculations. With the Machinist Calc Pro 

you will spend less time looking up your most-needed calculations 

on charts, in books or on the Internet and more time machining.

The Machinist Calc Pro gives you hundreds of machining-specific 

calculations, including:

• Cutting Speed, Spindle Speed (RPM) 

• Feed Rate, Cutting Feed, Feed per Tooth (Chip Load)  

• Built-in Drill and Thread Size reference tables  

• Drill Point Cut Depth solutions 

• Wire Sizes and 3-Wire Measurements 

• Bolt Pattern hole layouts with center x, y coordinate 

• Right triangle math 

• Trigonometric solutions

• Work in and convert between U.S. and Metric units, including: 

• Decimal Inches/Mils 

• Feet-Inch-Fractions 

• m, mm, cm 

• Area, Volume and Weight