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

I’ve been using the Construction Master Pro for about a year now, and it’s easily one of the best tools I’ve added to my kit. What started as something I thought would be “nice to have” turned into something I use all the time. It saves a ton of time on measurements, conversions, and layouts. No second guessing, no pulling out the phone—just quick, accurate answers on the spot. Once you get used to it, it becomes second nature. The build quality has held up great too. It’s been in and out of tool bags, job sites, and still works like day one. If you’re in construction, carpentry, or anything hands-on, this thing is a no-brainer. A year later, I’d buy it again without hesitation.

This calculator is really handy for construction work. It makes measuring and calculating fractions, slopes, stairs, and more much easier. A great tool to have on the job!

I really recommend it for interior designers, architects and engineers. I was used with Metric system and I had to learn the imperial system moving to US. Make life easier working everyday with converting measurements.

Works great, highly recommend. Lived life without it, but now with it I’m spoiled.

I like the product. I have had one before. It was supposed to be delivered within 4 hours by 6 PM yesterday evening. It got here at 4:30 this morning. It was left on the edge of my porch, where it rained. Amazon delivery is getting worse as it goes. Between late packages and your package seems to be lost.

Stop wasting time—this is the only calculator every contractor needs. Fast, precise, and built to make you money.

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.

Calculator is good,nice.One thing I really do not like a case is rubber.Complet plastic case will be much better.

great unit for work

Very useful in framing works.

Un mio collega possiede il modello precedente di questa calcolatrice e, dopo aver provato la sua ed averne constatato l'enorme utilità, mi sono decisa ad aquistarla a mia volta. Il prezzo è forse un po' alto, ma la facilità con cui ora riesco a gestire conversioni, somme e computi metrici per offerte è impagabile. Inoltre, guardando il libretto di istruzioni, sto scoprendo tutta una serie di funzioni che costituiscono certamente un valore aggiunto. La confezione, al posto del guscio di plastica standard, includeva un bonus, ovvero la custodia protettiva "armadillo gear". Questo accessorio temo che in realtà abbia notevolmente influito sul prezzo di vendita - la stessa calcolatrice, infatti, se acquistata in un negozio fisico negli US ha un costo di gran lunga inferiore. Ma io non volevo aspettare di andare ad acquistarla direttamente e comunque l'idea di una cover protettiva mi sembrava un'ottima cosa per proteggere la calcolatriche da danni da caduta quando sono fuori ufficio. E questa copertura in gomma effettivamente protegge la calcolatrice da qualunque tipo di urto, peccato però che ne aumenti l'ingombro in maniera quasi eccessiva, rendendo impossibile di fatto il trasporto in tasca. Inoltre, la custodia è larga e raccoglie quindi ogni tipo di residuo e polvere; il gancio dello sportello, infine, rende difficile poterlo aprire e si deve sempre operare con due mani. Quindi, questo mi impedisce di utilizzarla per lo scopo per cui è stata acquistata - ovvero una gestione facilitata anche durante le fasi di lavorazione. Dato il costo, ho ovviamente cercato di acquistare la cover standard separatamente (ora devo rimuovere lo scudo protettivo quando sono in posti senza piani di appoggio confortevoli) per avere una protezione seppur minima proprio nelle occasioni che contano, ma senza fortuna. Non posso quindi dirmi completamente soddisfatta. L'oggetto in sé è ottimo con perfette funzionalità ed un funzionamente intuitivo, ma l'imposisiblità di fruirne come pianificato ne diminuisce l'utilità.

I am really glad that I bought this and relieved that I could buy it in the UK. If you work in construction it would make your life easier. It takes some getting used to the range of functions however if you are a joiner the stair function and traditional cut roof functions are great. You can input metric or imperial although the inputs are more logical when done in imperial and use the American phrases for roofing and framing. It has a good instruction booklet however the you tube channel is the best resource. The quality seems to be very good but came with a tough case too. Well worth the money.

La facilidad de hacer y calcular ángulos en la construcción. La uso para verificar ángulos y mediciones y cálculo de materiales en la construcción de una casa. Apenas empiezo a utilizarla, pero sin duda aún tiene muchas cualidades que conocer y utilizar. Su manual es de gran ayuda.