Calculated Industries 4050 Construction Master 5

• Complete stair calculations for risers, treads, stringer length, stairwell opening and incline angle
• Built-in right-angle functions for square-ups, slopes and more
• Area, volume and perimeter solutions
• Rafter function solves for common rafters, regular and irregular hips, valleys and jacks
• Circular and arc: areas, diameters, circumference
• Advanced solutions for circles, arches, columns, cones, pillars, windows and post-holes
• Find volumes for concrete driveways, columns and more
• Arched rake-walls with on-center spacing in ascending or descending order
• Quickly calculate the number of on-center studs for an entered length
• Solve equal sided polygons, corner and bi-sect angles, side length, perimeter and area

With the Construction Master 5, you'll get easy-to-use fast, accurate construction-math solutions for plans, layouts and on-site construction. Enter the numbers, just as you would say them, and the answers appear in an instant. Calculate roofs, stairs, circles, and more. Works in and converts between feet-inches-fractions and decimals, including metric. Use it in the field or office to save time, reduce costs, prevent re-work and maximize profits.

For Contractors, Framers, Builders, Architects, Engineers and Tradespersons

Key Specifications

Board feet lumber estimating

Easily solve unit costing and pricing

Size: 5.7" x 3.0" x 0.65" (145mm x 76mm x 17mm)

Product Weight: 7 oz. (200 grams), includes case and Pocket Reference Guide

Power: One 3-volt CR2016 long-life battery

Display Type: LCD: 11 digits, 7 normal, 4 fractions

Display Dimensions: 0.73" x 2.56" (19 mm x 65 mm)

Accuracy: 10 digit internal accuracy

Product Contains

Includes: Protective slide-on hard case, pocket reference guides in English and Spanish, one CR2016 long-life battery, one-year warranty

Shipping & Delivery Information

We are committed to providing reliable, flexible delivery options to suit your needs. Here’s everything you need to know about our shipping and delivery process.

Our Couriers

We’ve partnered with trusted couriers to ensure your order arrives safely and on time:

• Royal Mail
• DPD
• DHL
• Palletways (for heavier items)

This variety enables us to offer delivery options tailored to your order size and location.

Same-Day Dispatch

• Order by 2:30 PM GMT/UTC on a working day, and we’ll dispatch all in-stock items the same day.
• Orders placed after this time will be processed on the next working day.

Delivery Times

• UK Orders: 1–5 working days*
• European Orders: 3–10 working days*
• Rest of the World: 4–15 working days*

*Delivery times are estimates and may vary based on your location and courier performance.

Shipping Costs

• Shipping rates are calculated based on the total weight of your order.
• A small additional charge (around 10%) is added for packaging and handling.
• The most suitable delivery option will be automatically selected at checkout.
• If no option is shown, please contact us for assistance.

Special Delivery Options

• Time-specific and Saturday delivery options are available for added convenience.
• These can be selected during checkout, where available.

International Shipping

• We ship to most countries worldwide.
• Simply select your destination at checkout to view available options.
• Import taxes and customs duties are not included in our shipping fees and must be paid upon your goods’ arrival at customs.
  For more information, visit DHL.com or consult your local postal service.

Order Collection

Prefer to collect your order?

• Select Collection as your delivery option at checkout, and we’ll have your order ready for pickup.

Additional Information

• All delivery times are estimates and subject to factors beyond our control, such as customs delays or courier issues.
• For any questions or further assistance, please don’t hesitate to contact us.

Warranty Coverage

Standard Warranty: All products are guaranteed for one year from the date of purchase (unless otherwise specified).

During the warranty period, we will repair or replace any defective products at no charge (return-to-base warranty), excluding normal wear and tear.

Eligibility

To benefit from our warranty, please ensure that:

• The product has been installed and used according to the instructions or user manual provided.
• The product is used for its intended purpose as described in the manual.

Please note: Accidental damage, consequential losses, and misuse are not covered by this warranty.

Exclusions

The following consumable items are not covered:

• Batteries
• Solder tips
• Heating elements