Calculated Industries 4065 Construction Master Pro Calculator
- Feet-inch-fraction construction math
- 2.6 inch LCD screen
- 2 LR44 batteries included
- Silver plastic enclosure
- 1 year manufacturer warranty
Last refreshed Sep 23, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A long-established feet-inch-fraction calculator for framers, estimators and builders who work in dimensions daily. The listing does not break out its individual functions.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0007Q3RGQCategory: Construction Calculators
Overview
A feet-inch-fraction engine forms the core of the Calculated Industries Construction Master Pro, a battery-powered handheld for building math. Its LCD shows results in the units a carpenter reads off a tape, so no manual conversion is needed.
Decades of use in apprenticeship and trade programs are the reason to look, with a layout familiar to framers and stick-builders. The limit is detail, since the listing gives no function list for stairs, rafters or other advanced routines.
Who it's for
A framer, builder or apprentice who works in feet, inches and fractions will use it all day on a job. Students in math classes, or anyone wanting a full function list before buying, should look at other models.
Pros and cons
- Feet-inch-fraction entry and display
- Used widely in trade training
- Battery powered, no outlet needed
- Function list not given
- Plastic enclosure only
Performance notes
The calculator holds measurements in building units, so adding and dividing lengths gives answers in feet, inches and fractions without separate conversion. Battery power makes it usable on site, and the LCD size sets how much of each result is visible at once.
Specifications
| Brand | Calculated Industries |
|---|---|
| Dimensions & fit | |
| Screen Size | 2.6 inches |
| Dimensions (L x W) | 5.75"L x 3"W |
| Item Weight | 8.16 ounces |
| Power & efficiency | |
| Power Source | Battery Powered |
| Construction & materials | |
| Enclosure Material | Plastic |
| Color | Silver |
| Warranty & support | |
| Warranty | 1 year manufacturers |
| Other details | |
| Calculator Type | Construction/Building |
| Display Type | LCD |
| Batteries | 2 LR44 batteries required (included) |
Frequently asked questions
How big is the Construction Master Pro?
The listed size is 5.75 inches long by 3 inches wide, and it weighs 8.16 ounces.
Does it need batteries?
Yes. It uses 2 LR44 batteries, and they are included.
Is it a scientific calculator?
No. It is a construction calculator for feet-inch-fraction math.