--- product_id: 51804280 title: "4050 Construction Master 5 Construction Metric and Imperial Calculator for Contractors, Estimators, Builders and Carpenters,Black" brand: "calculated industries" price: "€ 107.32" currency: EUR in_stock: true reviews_count: 13 category: "Calculated Industries" url: https://www.desertcart.pt/products/51804280-4050-construction-master-5-construction-metric-and-imperial-calculator-contractors store_origin: PT region: Portugal --- # Dual Metric & Imperial Units Advanced Layout & Volume Calculations Instant Right-Angle Solutions 4050 Construction Master 5 Construction Metric and Imperial Calculator for Contractors, Estimators, Builders and Carpenters,Black **Brand:** calculated industries **Price:** € 107.32 **Availability:** ✅ In Stock ## Summary > 📊 Build Smarter, Not Harder — Your Ultimate Construction Sidekick! ## Quick Answers - **What is this?** 4050 Construction Master 5 Construction Metric and Imperial Calculator for Contractors, Estimators, Builders and Carpenters,Black by calculated industries - **How much does it cost?** € 107.32 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/51804280-4050-construction-master-5-construction-metric-and-imperial-calculator-contractors) ## Best For - calculated industries enthusiasts ## Why This Product - Trusted calculated industries brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Field-Ready:** Compact, lightweight design with protective slide cover and long-life batteries keeps you powered through any jobsite. - • **Cut Costs, Not Corners:** Accurate material estimates prevent waste on roofing, drywall, concrete, and lumber—protect your budget effortlessly. - • **Master Every Measurement:** Seamlessly switch between meters, millimeters, feet, inches, and yards for flawless precision on every project. - • **Speed Up Complex Calculations:** Built-in functions for rafters, slopes, stairs, and arches save you time and eliminate guesswork in the field. - • **Trusted by Pros, Loved by You:** Backed by a 1-year warranty and glowing 4.6-star reviews, this calculator is the daily essential for contractors and builders. ## Overview The Calculated Industries 4050 Construction Master 5 is a professional-grade calculator designed for contractors, estimators, builders, and carpenters. It offers fast, accurate dimensional math in both metric and imperial units, with specialized functions for layouts, bids, and material estimates. Featuring a 2.5-inch LCD, durable plastic enclosure, and powered by two included LR44 batteries, it reduces costly errors and saves time on-site. With a protective cover, bilingual reference guides, and a one-year warranty, it’s a trusted tool that pays for itself daily. ## Description Calculated Industries 4050 Construction Master 5 Construction Metric and Imperial Calculator for Contractors, Estimators, Builders and Carpenters,Black : desertcart.co.uk: Stationery & Office Supplies Review: makes marking out a breeze - a great piece of kit for anyone to have. makes marking out and finding quantities and volumes a doddle Review: 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. ## Features - SOLVE ALL YOUR DIMENSIONAL MATH quickly and accurately with the calculator's powerful built-in solutions for completing layouts, plans, bids, estimates and more, directly in Metric or Imperial units - LETS YOU EFFORTLESSLY WORK IN AND CONVERT between all common building dimension formats; Meters, milimetres, centimetres, feet-inch-fractions, decimal feet-inches, and yards including area and volume - TIME-SAVING BUILT-IN FUNCTIONS for right angles give you instant solutions for square-ups, rafters (hip, valley, jacks), rake-walls, slopes, angles and more. Plus complete stair layout, advanced solutions for arcs, arches, circles, columns and more - "PREVENTS COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Find volumes for concrete driveways, columns and more. Arched rake-walls with on-center spacing in ascending or descending order" - INVALUABLE' TOOL PAYS FOR ITSELF DAILY by reducing headaches, saving time and preventing expensive material errors on all your projects, from the office to the field. Comes with a protective plastic slide cover, pocket reference guides in English and Spanish, two LR44 long-life batteries and a full one-year limited warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0008GO6A6 | | Best Sellers Rank | 211,965 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 80 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 217 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 | ## Product Details - **Brand:** Calculated Industries - **Calculator Type:** Engineering/Scientific - **Colour:** Black - **Display type:** LCD - **Material:** Plastic - **Model name:** Construction Master 5 - **Number of batteries:** 2 LR44 batteries required. (included) - **Power source:** Battery Powered - **Screen size:** 2.5 Inches - **UPC:** 098584040505 791836793418 733353054665 767674984707 ## Images ![4050 Construction Master 5 Construction Metric and Imperial Calculator for Contractors, Estimators, Builders and Carpenters,Black - Image 1](https://m.media-amazon.com/images/I/715GOBDpX9L.jpg) ## Questions & Answers **Q: Can this calculate the forms for a concrete stairs** A: Yes it's the same as normal timber stairs just add the width of the stairs to you calculation. ## Customer Reviews ### ⭐⭐⭐⭐⭐ makes marking out a breeze *by A***R on 24 November 2023* a great piece of kit for anyone to have. makes marking out and finding quantities and volumes a doddle ### ⭐⭐⭐⭐⭐ Brilliant tool *by P***6 on 2 October 2023* Great tool for construction, I’ll be using this to build my staircase, used it for a few jobs already, it’s great. ### ⭐⭐⭐⭐⭐ Best thing ever, in the history of ever ness! *by G***. on 1 May 2020* 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!!!! ## Frequently Bought Together - Calculated Industries 4050 Construction Master 5 Construction Metric and Imperial Calculator for Contractors, Estimators, Builders and Carpenters,Black - Calculated Industries 2140 Construction Master Pro Workbook and Study Guide | 4 Comprehensive Sections | Site Development | Footings, Slabs, Walls | Framing | Finishing |Practice Problems, Answers - Barnwell Pair of Brass Stair Gauges for Framing Carpenters Square --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/51804280-4050-construction-master-5-construction-metric-and-imperial-calculator-contractors](https://www.desertcart.pt/products/51804280-4050-construction-master-5-construction-metric-and-imperial-calculator-contractors) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-11-07*