Calculated Industries 4065



(as of 02/18/2018 at 19:30 UTC)

SKU: B0007Q3RGQ. Category: .


Product DescriptionThe industry standard Construction Master Pro is the most powerful construction-math calculator on the market.

POWERFUL BUILT-IN SOLUTIONS — help contractors, estimators, architects, carpenters, framers, draftspersons, engineers, builders, tradespersons – anyone needing fast, accurate solutions for construction, building, framing, concrete work and more. Powerful framing functions help you solve for irregular and regular hip/valley and jack rafters plus rake walls and cutting angles.

PERFECT FOR LAYOUTS BIDS AND ESTIMATES — Instantly find how much material you need for framing, studs on center, drywall, siding and paneling. Roofing function calculates the amount of bundles and squares for roofs. Easily calculated volumes when excavating, determine how many truckloads and weight in tons.

DIMENSIONAL MATH AND CONVERSIONS — Quickly and easily work in and convert between feet-inches-fractions, decimals and metric. Use the Construction Master Pro to convert distances and area on scaled maps and drawings to actual lengths and areas. D:M:S: function lets you convert to Degrees:Minutes:Seconds to decimal degrees and vice-versa.

MORE TIME SAVING FUNCTIONS — Include circular calculations for arcs, area, circumference, arched segment walls, arched windows with or without base. A “paperless tape” function lets you review the past 20 entries to double-check your totals.

INCLUDES — easy to follow Pocket Reference Guide in English and Spanish, two long-life LR-44/A76 batteries, rugged shock, dust and moisture-resistant Armadillo Gear protective case and a one-year limited warranty.

Start saving time and eliminating costly errors on every job – click Add to Cart now!

Copyright 2017 Calculated Industries. All rights reserved.

The construction master pro (model 4065) from Calculated Industries sets the industry standard for advanced construction-math calculators. 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, estimators, architects, builders, framers, engineers, concrete/foundation contractors, draftspersons, and more.

calculated 4065
Ideal for completing layouts, bids, and estimates (view larger).

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. 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 4 by 8, 4 by 9 or 4 by 12 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 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 inches by .625 inches. Overall, the calculator measures 5.6 inches by 3 inches by .6 inches, and weighs 4.5 ounces. It’s backed by a one-year limited warranty.

What’s in the Box

One Calculated Industries 4065 construction master pro calculator, Armadillo Gear protective cover, pocket reference guide in English and Spanish, and batteries.


At a Glance
4065 Construction Master Pro Calculator At a Glance:
  • Work in and convert between all building dimensional formats
  • Perfect for completing layouts, plans, bids, and estimates
  • Large 11-digit display
  • Powered by two LR-44/A76 batteries
  • One-year limited warranty
At a Glance


  • ROOF, RAFTER, FRAMING KEYS – give you quick solutions for common, regular, irregular jack and hip/valley rafters, roof surface area, cutting angles
  • COMPLETE STAIR LAYOUT FUNCTIONS – let you quickly solve for number of treads, tread width, risers, stringers, stairwell openings, inclination angle
  • QUICKLY ESTIMATE MATERIAL COST – for all your layouts and construction projects, square footage, studs on center, drywall, roofing, blocks, footings
  • RUGGED AND CONVENIENT – set preferences that you want for fractions, riser and floor height, studs on center and it comes with an Armadillo Gear case
  • CONVERSIONS ARE A SNAP – work in the units and format you want without having to struggle with math – feet and inches, fraction, decimal or metric


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