Calculated Industries
Tradesman Calc Trades Math/Conversion Calculator 4400, Calculated Industries
This powerful calculator helps tradesmen on the job whenever they need to use or calculate dimensional math, fractions (ruler, proper, improper, and mixed), unit conversions, ratios and proportions, trigonometry/trig and plane geometry (right triangles/angles, circular and polygonal shapes). In addition, this trades math/conversion calculator has a wide range of powerful math functions, including the ability to enter math equations using order of operations. And you can work with exponents, square roots, reciprocals and more.
 Right Triangle Math: Enter and calculate Angle, Hypotenuse, Opposite and Adjacent side lengths
 Trigonometric Functions: Solve angle and side problems using Sine, Cosine, Tangent, Arcsine, Arccosine, Arctangent
 Circle/Arc: Enter and calculate area, circumference, radius, diameter, Arc Angle, Arc Length, Chord Length, Arc Height
 Ratios and Proportions: Find x, y values, calculate proportional values
 Hexagon/Polygon: Find Exterior Angle, Interior Angle, Side Length, Outside Diameter, Inside Diameter, Perimeter and Area
 Work in Architectural (ruler) fractions (1/4 inch, 1/16 inch, etc.), proper fractions (2/3), mixed number fractions (1 2/3) and improper fractions (5/3)
 Solve dimensional math problems, and convert between U.S. and metric dimensional math units
Powerful and Easy to Use Trades Math/Conversion Calculator
Versatile and easytouse, the Tradesman Calc handheld calculator from Calculated Industries (model 4400) will help you solve all kinds of math and geometry/trigonometry problems. The Tradesman Calc is designed to be useful for both teaching technical trade math and for using on the job in a variety of settings requiring technical math, including Welding, Metal Fabrication, Engineering, Automotive Service Technology, Aviation and Drafting. It is ideal for people working in mathoriented trades and for students and instructors needing an easytouse handheld calculator with applied math functions.
With the Tradesman Calc trades math/conversion calculator you can work in and convert between all kinds of fractions — architectural (ruler) fractions (like 1/4inch, 1/16inch, etc.), proper fractions (2/3), mixed number fractions, (12/3) and improper fractions (5/3). You can also work in and convert between U.S. and metric dimensional math units — feetinchfractions, yards, decimal inches, meters, centimeters, millimeters, pounds, tons, grams, kilograms, metric tons, board feet, dry ounces. The calculator also has a wide range of powerful math functions, including the ability to enter math equations using order of operations. And you can work with exponents, square roots, reciprocals and more.
The Tradesman Calc is easytoteach and easytolearn, making it ideal for instructors helping students in career and technical education programs develop and expand their applied and practical math skills.
Dedicated Functions:
 Work in Architectural (ruler) fractions (1/4 inch, 1/16 inch, etc.), proper fractions (2/3), mixed number fractions (1 2/3) and improper fractions (5/3)
 Solve dimensional math problems, and convert between U.S. and metric dimensional math units
 Solve angle and side problems with trigonometry
 Enter and solve circle, arc, radius hexagonal and polygonal dimensions
 Convert between decimal and fraction
 Enter and solve ratios and proportions
 Enter math equations using order of operations
 Work with exponents

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User Reviews
User: Alvin L. Nunley
User Rating: ★★★★
I have a radio shack that does the same thing only quicker and less key strokes and the display is much bigger.
still not all that bad..
User: Jacques B
User Rating: ★★★★
Workers of the sheet metal.
This model 4400 the calculated industries, answers very well my waits.
He allows the drawing by the trigonometry, the resolution of the rightangled triangle,
the conversions and the very practical height of the other functions.
Buy without hesitating.
Thank you, for the fast delivery.
User: Kevin McPhatter
User Rating: ★★★★
This trades math/conversion calculator rocks! It is exactly what I needed. I'm an apprentice electrician and having the trigonometry functions is invaluable. The ability to do fractions feet and inches and convert to metric is a plus. This is a must own you are in the trades or are in trade school.
User: Peter D
User Rating: ★★★★★
I've only scratched the surface of this one, but I already love it. Unlike many other Calculated Industries products, with many highly specialized functions, this is pretty much a standard scientific calculator that has the awesome ability to work directly in different units. It has trig, square, square root, etc. This is what I was looking for.
You can work in US units, like:
decimal yards, feet, inches
feet+fractional inches
fractional inches
Also, others like pounds, kilograms, mm, m, etc.
It has basic dimensional analysis. You don't just plug numbers in and hit a conversion key, it actually keeps track (to a point) of the units for you. For example, 25.4mm and 1 inch are basically the same thing. I can enter 25.4mm times 8 feet, and get a result in square feet  it's smart enough to know what you mean. It does not appear to let you mix units, like lbft, for example.
It comes in a hard removable case, and has a well written instruction booklet that fits into a slot in the back.