Complete trigonometric functions in a handheld field calculator (view larger).

A more compact version of its desktop sibling, the handheld Construction Master Pro Trigonometric calculator (model 4080) from Calculated Industries is the most complete construction-math calculator on the market. Offering powerful built-in solutions and expanded preference settings, it's perfect for completing layouts, bids, and estimates as well as helping to save time and money by helping you figure out the right amount of needed materials. It's ideal for or contractors, architects, builders, engineers, project managers, estimators, draftspersons, and more.

Quick, Accurate Solutions in the Field

You'll be able to work in and convert between all building dimensional formats--yards, feet-inch-fractions and metric--including area and volume. And it also comes with a full trigonometric functionality (sine, cosine, tangent, arcsine, arccosine and arctangent simplify complex design and construction-math).

The Construction Master Pro includes a number of built-in time-saving functions, including calculations for risers, treads, stringer length, and incline angle; how many 4x8, 4x9 or 4x12 sheets are needed to cover an area; jack rafter results for regular and irregular pitch roof; determining number of on-center studs for an entered length; and right angles. It also offers advanced solutions for circles, arches, columns, cones, pillars, windows and post-holes arcs, circumference, and segments.

Handheld Convenience

The Construction Master Pro Trig also includes the ability to custom define your preferences (such as fractional settings), a "paperless" tape that lets you review the previous 20 entries to double-check your totals, and accumulating memory with three additional memory storage locations. It's powered by a two 1.5-volt batteries (LR-44/A76), and the Construction Master Pro has an auto shut-off feature that turns the calculator off after about 8 to 12 minutes of non-use. The 11-digit display measures 2.5 x 0.625 inches. Overall, the calculator measures 5.6 x 3.0 x 0.6 inches, weighs 4.5 ounces. It's backed by a one-year limited warranty.