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Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters

(255 Reviews)
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$32.97
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(10000 available )
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Reviews

  • Paul M.

    > 3 day

    I am yet to get to know how to use this well worth tool effectively so with the help of friends like Google and Youtube I am on my way. It is a very helpful tool for my workshop.

  • Brian Arellano

    08-06-2025

    Great item but I like the Construction Master IV better for my needs.

  • Al Del Rio

    > 3 day

    If you are in construction you know that this is something you have to have, the armadillo cover is a great addition to the package since before this calculator (I hope the last one I ever buy) I broke countless displays because I have the bad habit of putting it in my jeans back pocket.

  • Douglas J Pike

    Greater than one week

    EXCELLENT

  • Lynn

    > 3 day

    Not only is this a great product, but a wide variety of online videos make it easy for non builder to figure out.

  • j smith

    > 3 day

    I was all set to love this calculator until I discovered it doesnt calculate rafter tail length. Then I found that the 4067 model does calculate total rafter length including the rafter tail. I returned this item and intend to purchase the 4067 model in the near future. Excepting for not calculating total rafter length, this calculator is very, very helpful.

  • Joseph Deer

    > 3 day

    Really good product!!! Many easy use functions. Great construction calculator.

  • Ty McMillan

    > 3 day

    If youre a contractor or in any field of construction this is a must have! Best calculator out there to use

  • Aaron

    07-06-2025

    Used it for a home project that involved roof framing and it was so useful. I wish I would have bought one sooner.

  • Chika

    03-06-2025

    This calculator save me a lot of time.Still figuring out how to use it completely.only things that not sure about is Stair calculation.It wont break down to 1/16th when calculating riser and thread,but may be I am doing something wrong...

The Construction Master is and has been the industry standard for carpenters and craftsmen for over 30 years. Its use is taught in apprenticeship and training programs at the high-school, college, union and industry level across our country and beyond. An entire generation of framers and stick-builders grew up using it and advising us on new capabilities they wanted built-in. Building materials and techniques have changed over the years but geometry and the need to work quickly and accurately with dimensions is as important and difficult as ever. Put the time-tested Construction Master Pro on your next project and you’ll be glad you did.

Amazon.com

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.

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.

 

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

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