






Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.
📐 Master every measurement, build with confidence.
The Calculated Industries 4050 Construction Master 5 is a professional-grade calculator designed for contractors, estimators, builders, and carpenters. It supports both metric and imperial units, offers specialized functions for complex construction math including stair layouts and roof calculations, and helps prevent material waste with precise volume and quantity estimations. Lightweight and durable, it features a 2.5-inch LCD, protective cover, and long-life batteries, making it an indispensable tool for efficient, error-free project planning.










| ASIN | B0008GO6A6 |
| Best Sellers Rank | 160,598 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 63 in Financial & Business Calculators |
| Brand | Calculated Industries |
| Brand Name | Calculated Industries |
| Calculator Type | Engineering/Scientific |
| Colour | Black |
| Country of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 218 Reviews |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Weight | 0.17 Kilograms |
| Manufacturer | Calculated Industries |
| Manufacturer Part Number | 4050 |
| Model Name | Construction Master 5 |
| Model Number | 4050 |
| Number of Batteries | 2 LR44 batteries required. (included) |
| Number of Items | 1 |
| Number of batteries | 2 LR44 batteries required. (included) |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Product Warranty | One year warranty |
| Screen Size | 2.5 Inches |
| Screen size | 2.5 Inches |
| UPC | 098584040505 791836793418 733353054665 767674984707 |
A**R
makes marking out a breeze
a great piece of kit for anyone to have. makes marking out and finding quantities and volumes a doddle
P**6
Brilliant tool
Great tool for construction, I’ll be using this to build my staircase, used it for a few jobs already, it’s great.
G**.
Best thing ever, in the history of ever ness!
I love this construction masker calculator! I purchase a lot through amazon, this is, with out question my best purchase to date! There are tons of great videos out there to show you how to use, and how to customise! The main reason I like this particular model, is down to the fact I can use it in Metric. Being in the uk we use both matrix and imperial, this is so versatile I can use it interchangeably. A must have!!!!
N**7
helpful gadget.
Bought for husband to use at work. Arrived well packaged & in the allocated time. He has used this a few times already & is very pleased with it.
N**.
Very handy
Great piece of kit for any carpenter/joiner. Great for working out roof rafters and stairs. Highly recommended.
D**Z
Fantastic calculator, saves time doing calculations on site.
Great price. Does what it says on the tin. Fits into pocket.
A**N
Easy to use
Fantastic bit of kit, Highly recommended.
D**E
Great product
Takes all the hard work out of measuring and working out for materials
W**Z
Det fungera vara bra
Jag gillar allt
M**.
Blueprint for Success: The Calculated Industries 4050 Construction Master 5
Purchased the Calculated Industries 4050 Construction Master 5 for my son, a second-year architectural engineering student, and according to him, it's been a game-changer. Here's why it's become such an essential tool: Complex Calculations Simplified: This calculator simplifies complex construction math, crucial for his demanding courses. It's making tough calculations quicker and more accurate, saving him time and stress. Designed for Engineering Tasks: Tailored for architectural and engineering calculations, it offers functions that are directly applicable to his studies and future profession, enhancing his learning and project work. User-Friendly: Despite its advanced capabilities, the Construction Master 5 is surprisingly easy to use. It didn't take long for my son to get the hang of it, allowing him to focus more on learning and less on figuring out how to use the tool. Durable and Reliable: It's built to last, which is important for a student's hectic life. He can carry it around campus without worrying about it getting damaged. Overall Impact: It's made a significant difference in his academic life. Every tool that makes his challenging path a bit smoother is invaluable, and this calculator fits the bill perfectly. Final Thoughts: The Calculated Industries 4050 Construction Master 5 comes highly recommended for any student in architectural engineering or similar fields. It's not just a calculator; it's a support system that helps navigate through complex calculations with ease and confidence.
D**Y
A time saver
I am impressed. Great tool , a time saver.
D**.
Good
Works like intended
J**E
Simplify your life
Love the ease of use and safety it procures me, did it manually before, wouldn’t go back!
Trustpilot
2 days ago
1 month ago