Quality, reliability, good product It is has a good used

Accurate, time-saving construction calculator I’ve had this construction calculator for a while now and absolutely love it. I use it most often for roof pitch calculations and for confirming square, and it’s been consistently accurate.Once you get the hang of how it works, it’s quick, easy, and very efficient. It really saves time compared to doing everything manually or double-checking with other methods.One project where it really stood out was laying out a rake wall with studs at 16 inches on center. The calculations made it easy to get perfect saw cuts so everything nailed up cleanly and matched the pitch exactly.I would definitely recommend this calculator for any construction use. It’s a great tool that earns its place on the jobsite.

Good for anyone who does a lot of fractional adding. Great product I have used the small handheld models for over 20 years and this works just as good and easier to see the numbers.

Great product for builders this is a great calculator for builders, but I recommended having a bigger display so you could see what has been entered . Measure twice cut once

Much easier to use than the pocket version. Grudgingly ordered this after having to switch back to an older phone and the factory wipe removed my app only to find out it could not reload the app because CI doesn't support Andriod 11 anymore and wont allow access to older versions that did. This is a must for anyone doing desk work and currently using the app or pocket version. Larger display, larger hard buttons, much easier and more efficient to use. Hopefully more durable. Before going to the app I was going through the soft button pocket version at a rate of 1 per year.

A little hard to use I bought a Construction Master III in 1993 when I built my first house. At the time, I was a general contractor. It's been decades since I have done construction professionally. But I have used the calculator periodically through the years for various personal construction projects.I bought the 4065 Construction Master Pro thinking there must be some substantial improvements over the last 30 years. It does have a few new features, but most of those are accessed using a combination of keystrokes which are difficult to remember.The markings for the alternate functions of the keys are very tiny and difficult to read. The manual, which is often needed to determine the keystrokes needed for a particular function, is difficult to get to. You have to pry the calculator out of its armor case to get the the manual tucked into the back.On my original calculator, the manual is tucked into a flap on the case, and is readily available for reference. So, I returned the 4065, and will continue to use my 30 year old calculator.In general though, these calculators are very useful.

Invest & make your life easier! I’m writing this review 5yrs later! This is by far one of the best investments I have made makes my job easier. I am a carpenter concrete foreman so this calculator helps me out a ton when I need to order material and even when I am dealing with slope percentages etc. It’s awesome and can take a beating too it’s been in my bag pouch ever since.

Coolest calculator ever for construction!!!! Has all the features of the 4065 and the 4080 trig model.I also have the 4065 which is more portable.Not exactly portable but it's awesome!!All of the construction master calculators are incredible.Also they have a huge library of videos on YouTube and if you get stuck you can call them and there's always a person there that can help walk you through it.Great customer service. Every time I've had to call it's a real person here in the US. Can't say enough good things about this calculator and the company.

A Must Have Carpenter Equipment Very useful in framing works.