📐 Build smarter, save bigger — the pro’s secret weapon!
The 4065 Construction Master Pro is a professional-grade construction calculator designed for estimators, builders, framers, and remodelers. It offers fast, accurate dimensional math with multi-unit conversions, built-in angle and layout functions, and material estimating tools to reduce waste. Housed in a rugged protective case, it includes reference guides, long-life batteries, and a one-year warranty, making it an indispensable tool for daily jobsite and office use.
| Manufacturer | Calculated Industries |
| Part Number | 4065 |
| Item Weight | 8.2 ounces |
| Product Dimensions | 5.75 x 3 x 0.6 inches |
| Item model number | 4065 |
| Is Discontinued By Manufacturer | No |
| Color | Silver |
| Style | Handheld |
| Pattern | Calculator |
| Power Source | Battery Powered |
| Voltage | 1.5 Volts |
| Item Package Quantity | 1 |
| Measurement System | metric |
| Display Style | Digital |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Warranty Description | 1 year manufacturers |
| National Stock Number | 4820-01-299-7444 |
C**N
So useful
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.
C**B
Good purchase
Does exactly what it says it will. Really helpful
C**Y
Great addition to the toolbox
Used the calculator to work out a roof it was a great help worked out in no time to perfection.
P**B
Construction Master Pro
My only criticism is with the plumb and cheek calculations for rafters. The plumb cut is given the same as the pitch when of course it should be 90 degrees less the pitch - eg. a 20 degree pitch would give a plumb cut of 70 degrees. The construction master would give the plumb cut as 20 degrees the same as the pitch angle. Also the cheek cuts for the hip and jack rafters are always given as 45 degrees which is correct for the plan view on the horizontal plane but not the actual cut.
M**S
How have I lived without it
Once mastered, an absolute must for builders, Architects, DIY’ers, Planners etc
W**Y
A1
Saved me a lot of time a1
A**R
The carpenters mate
This device has taken all the head scratching out of roofing
H**
Annoying default on USA imperial calculations
I’ve been for years a traditional Roofer happy to use the tape measure method.Saw this calculator on YouTube and thought that it might speed up my work .The time it takes to understand how to use this calculator I’d have got half my Roof timbers on ,I don’t work imperial only metric so a waste of money as there’s no real quick get me going guide ,Wish I’d never bought it
