---
product_id: 1154922
title: "Calculated Industries 4080 Construction Master Pro Trig Advanced Construction Math Feet-Inch-Fraction Calculator with Full Trig Function for Architects, Engineers, Contractors, Estimators and Framers"
brand: "calculated industries"
price: "R2387"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Calculated Industries"
url: https://www.desertcart.co.za/products/1154922-calculated-industries-4080-construction-master-pro-trig-advanced-construction-math
store_origin: ZA
region: South Africa
---

# Multi-format dimension conversions Full trig functions for precise angles Built-in construction-specific formulas Calculated Industries 4080 Construction Master Pro Trig Advanced Construction Math Feet-Inch-Fraction Calculator with Full Trig Function for Architects, Engineers, Contractors, Estimators and Framers

**Brand:** calculated industries
**Price:** R2387
**Availability:** ✅ In Stock

## Summary

> 🧮 Elevate your build game with the ultimate pro trig calculator—because precision is your competitive edge.

## Quick Answers

- **What is this?** Calculated Industries 4080 Construction Master Pro Trig Advanced Construction Math Feet-Inch-Fraction Calculator with Full Trig Function for Architects, Engineers, Contractors, Estimators and Framers by calculated industries
- **How much does it cost?** R2387 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/1154922-calculated-industries-4080-construction-master-pro-trig-advanced-construction-math)

## 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

- • **Save Time & Cut Waste:** Integrated solutions for rafters, stairs, roofing, drywall, and lumber estimating prevent costly material errors on every project.
- • **Safety-First Battery Design:** Tool-secured button-cell battery compartment meets strict U.S. safety standards, ensuring peace of mind during daily use.
- • **Rugged & Ready for the Field:** Shock, dust, and moisture-resistant Armadillo Gear case keeps your calculator protected on-site and on-the-go.
- • **Seamless Dimension Conversion:** Effortlessly switch between feet-inch-fractions, decimal feet, yards, metric, and even area/volume units—no guesswork needed.
- • **Master Complex Angles Instantly:** Complete sine, cosine, tangent, arcsine, arccosine & arctangent functions built-in for flawless trig calculations.

## Overview

The 4080 Construction Master Pro Trig is the industry-leading construction calculator designed for architects, engineers, contractors, and framers. Featuring full trigonometric functions, multi-format dimension conversions, and specialized construction formulas, it streamlines complex calculations to save time and reduce costly errors. Built tough with a protective case and compliant battery design, it’s the trusted tool for professionals who demand accuracy and efficiency on every project.

## Description

Product Description The Construction Master has been the industry standard for carpenters and craftsmen for over 30 years. Its use is taught in apprenticeship and training programs at the high-school, college, union and industry level across our country and beyond. An entire generation of framers and stick-builders grew up using it and advising us on new capabilities they wanted built-in. The Construction Master Pro TRIG has those features built in including full trig functions. The trigonometric calculations include sine, cosine, tangent, arcsine, arccosine and arctangent. Building materials and techniques have changed over the years but geometry and the need to work quickly and accurately with dimensions is as important and difficult as ever. Button-Cell Battery Safety Compliant Design -- This product uses a button-cell battery housed in a compartment secured with a tool-required fastener. The battery is not accessible during normal use without a tool, supporting alignment with applicable U.S. consumer product safety requirements for button-cell batteries. Put the time-tested Construction Master Pro Trig on your next project and you’ll be glad you did. LEGAL: Construction Master and Calculated Industries are trademarks and registered trademarks of Calculated Industries, Inc. Copyright 2023 All rights reserved. From the Manufacturer The Construction Master Pro Trig Feet-Inch-Fraction calculator provides the building professional complete trigonometric function. It sets the industry standard as the most powerful and advanced construction-math calculator ever developed. With new built-in solutions and expanded preference selection you easily determine precise angle measurements and solve the most complex design and construction-math problems. In the field or office, get the job done right the first time!

Review: Perfect tool - Will fit in tee shirt pocket. Love the trig functions. Had to carry two calculators now I just have the one.
Review: Very useful to anyone - As a home building contractor, I used these Calculated Industry Construction Masters many times a week. In the old day, things like cutting rafters, building stairs, calculating amounts of building materials all had to be done the old fashioned way. These calculators saves a ton of time and are always correct if the data is entered correctly. I will also say it s very handy for a lay man or anyone that does things around their house, that involves volume, square footage, adding measurements together and much more. There will be a time when you say to yourself, Jeez, I wish I had bought that

## Features

- SOLVE YOUR DIMENSIONAL MATH quickly and accurately with the award-winning CM Pro Trig construction calculator’s powerful built-in solutions for completing layouts; and full trig functions with sine, cosine, tangent, arcsine, arccosine and arctangent
- LETS YOU EFFORTLESSLY WORK IN AND CONVERT between all common building dimension formats: feet-inch-fractions, decimal feet-inches, yards and metric - including area and volume. Plus weight-per-volume and D: M: S to decimal degree conversions too
- 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
- HELPS YOU PREVENT COSTLY MATERIAL WASTE with built-in solutions for roofing, drywall, studs, blocks, concrete footings and board-feet lumber estimating. Plus compound miter functions help avoid error when working with crown molding and other millwork
- INVALUABLE' TOOL PAYS FOR ITSELF by reducing headaches, saving time and preventing expensive material errors on your projects, in the office or the field. Comes with a rugged shock, dust and moisture-resistant Armadillo Gear protective case, pocket reference guides in English and Spanish, two long-life batteries and a full 1-year limited
- REESE’S LAW–COMPLIANT BATTERY DESIGN — Button-cell battery compartment is secured with a tool-required fastener to prevent unintended access and meet U.S. federal safety requirements (16 CFR Part 1263). Remains secured during normal use and handling.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00081764Y |
| Best Sellers Rank | #50,003 in Office Products ( See Top 100 in Office Products ) #13 in Financial & Business Office Calculators #112 in Basic Office Calculators |
| Brand | Calculated Industries |
| Built-In Media | Unit^Instruction Guide |
| Calculator Type | Engineering/Scientific |
| Color | Multi Colored |
| Customer Reviews | 4.8 out of 5 stars 842 Reviews |
| Display Type | LCD |
| Enclosure Material | Multi |
| Global Trade Identification Number | 00883546547594 |
| Item Dimensions L x W | 5.7"L x 3"W |
| Item Type Name | Construction calculator |
| Item Weight | 1.6 ounces |
| Manufacturer | Calculated Industries |
| Model Name | Construction Master Pro Trig |
| Number of Batteries | 2 LR44 batteries required. (included) |
| Power Source | Battery Powered |
| UPC | 702658629939 700465275899 696333575638 088354654759 767872160149 767654550229 768684116799 883546547594 700580268639 999992467758 098584040802 780320411167 |
| Unit Count | 1.0 Count |
| Warranty Description | Full 1-year limited warranty |

## Product Details

- **Brand:** Calculated Industries
- **Calculator Type:** Engineering/Scientific
- **Color:** Multi Colored
- **Number of Batteries:** 2 LR44 batteries required. (included)
- **Power Source:** Battery Powered

## Images

![Calculated Industries 4080 Construction Master Pro Trig Advanced Construction Math Feet-Inch-Fraction Calculator with Full Trig Function for Architects, Engineers, Contractors, Estimators and Framers - Image 1](https://m.media-amazon.com/images/I/71PkVj2bILL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect tool
*by B***H on November 2, 2025*

Will fit in tee shirt pocket. Love the trig functions. Had to carry two calculators now I just have the one.

### ⭐⭐⭐⭐⭐ Very useful to anyone
*by U***Y on September 6, 2025*

As a home building contractor, I used these Calculated Industry Construction Masters many times a week. In the old day, things like cutting rafters, building stairs, calculating amounts of building materials all had to be done the old fashioned way. These calculators saves a ton of time and are always correct if the data is entered correctly. I will also say it s very handy for a lay man or anyone that does things around their house, that involves volume, square footage, adding measurements together and much more. There will be a time when you say to yourself, Jeez, I wish I had bought that

### ⭐⭐⭐⭐⭐ Best invention since sliced bread !!!
*by R***Y on March 19, 2013*

This has to be my fifth or sixth Calculated Industries calculator purchase. I have two at my work, two at home, I keep one in my car too. I'm glad that my 4080 Pro came with the rubber armor as this should help with using it in the field and getting dropped. If you want a calculator to do the work of figuring feet and inches, cubic feet, square feet, stair layout, rafter pitch, volumes, board feet, material quantities, ounces, pounds, converting cooking measurements, figuring mortgage rates, time cards, payroll related calculations, handheld machining math, thread data, drill size chart look-ups, speeds and feeds, right triangle solutions, bolt patterns, estimating, takeoffs ...... the list goes on and on and on and on...... If you need a calculator to help with the items mentioned above than look no further than Calculated Industries. I work in a structural engineering office and this is my second 4080 Pro. I love the fact that it has "Trig" functions as well as the basic feet and inch functions. That is about 1% of what this little machine can do. I starting drafting with a 'T' square and now working on Revit so I've seen a lot change in my career. I wish I had the 4080 Pro when I was a younger draftsmen. It is an indispensable tool in my electronic briefcase of gadgets. As long as Calculated Industries is in business and I have a need for their calculators, I will purchase no other brand. Good instructions, ease of use, good battery life.

## Frequently Bought Together

- Calculated Industries Advanced Construction-Math Feet-Inch and Metric Calculator with Full Trig Functions,Silver
- Calculated Industries 2140 Construction Master Pro Workbook and Study Guide | 4 Comprehensive Sections | Site Development | Footings, Slabs, Walls | Framing | Finishing |Practice Problems, Answers

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-18*