---
product_id: 105780187
title: "Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries"
brand: "calculated industries"
price: "€ 51.20"
currency: EUR
in_stock: true
reviews_count: 5
category: "Calculated Industries"
url: https://www.desertcart.ie/products/105780187-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool
store_origin: IE
region: Ireland
---

# Rare-earth magnets for precise locating Cuts drywall openings in half the time Includes 3 targets for multi-gang boxes Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries

**Brand:** calculated industries
**Price:** € 51.20
**Availability:** ✅ In Stock

## Summary

> 🧲 Cut drywall like a pro—no measuring, no mistakes, just flawless results every time!

## Quick Answers

- **What is this?** Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries by calculated industries
- **How much does it cost?** € 51.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/105780187-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool)

## 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

- • **Triple Target Efficiency:** Three included targets let you mark multiple boxes simultaneously, maximizing your productivity.
- • **One Lift, One Cut, Zero Stress:** Install drywall once, mark, and cut—eliminating repeated lifting and reducing fatigue.
- • **Versatile Material Compatibility:** Works flawlessly on drywall, plywood, paneling, cement board, and more for all your projects.
- • **Cut Drywall Like a Pro, First Time:** Patented snap-into-place technology guarantees perfect cutouts, even for drywall novices.
- • **Magnetic Precision, Zero Guesswork:** Powerful rare-earth magnets locate electrical boxes through drywall effortlessly—no measuring needed.

## Overview

The Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool uses powerful rare-earth magnets and patented technology to help professionals and DIYers locate and mark electrical boxes behind drywall quickly and accurately. With three targets included, it enables simultaneous marking of multiple boxes, cutting drywall installation time in half while reducing errors and physical strain. Compatible with various materials, this hand-powered tool comes in a rugged case and requires no batteries, making it an essential upgrade for efficient, professional drywall cutouts.

## Description

Now Find Mark Electrical Boxes for Cutouts TWICE as Fast ; With NO Measuring! The Blind Mark electrical outlet box locator kit uses powerful rare-earth magnets to help you accurately locate and mark electrical outlet access holes for cutouts during installation of drywall, paneling and other materials, all with NO measuring required! SAVE A TON OF TIME INSTALLING DRYWALL ; with Blind Mark you simply place the targets in the outlet boxes, tack the drywall into place, use the locator to find the targets behind the drywall, mark the location then cut the hole. TWICE AS ACCURATE ; no more mis-measured and mis-cut drywall openings or having to patch mis-cuts or need to buy oversize plate covers. With Blind Mark you ;ll cut perfect openings every time. HANG IT ONCE, CUT IT RIGHT ; while other drywall locator methods require you to lift and lower heavy drywall sheets multiple times to mark, cut, then install, with Blind Mark you simply put it up once, cut the hole and you're done. HALF THE LIFTING ; because you only lift the drywall once to install it you not only finish in half the time but with much less fatigue or chance of injury or damage to fragile drywall corners. MULTIPLE MATERIALS ; works on drywall, sheetrock, plywood, paneling, particle board, laminated flooring, Masonite, exterior siding, cement board, tile backsplashes, slate and more! THIS KIT INCLUDES ; 3 targets with super strong magnets enable you to find multiple boxes at once for even greater time savings. Rugged storage case keeps the high quality plastic targets and locator organized and protected between projects. Why make drywall installation harder than it has to be? Let Blind Mark take the guesswork and the grunt work out of finding and cutting hidden electrical boxes. Click the Add to Cart button now! Copyright 2021 Calculated Industries. All rights reserved.

Review: These looked great and would be a handy addition if your putting up your own drywall/gyprock in the USA. I got them but they do not fit the AU/NZ size standard size wall plates. I returned them with no issues. Bummer! The magnets seemed pretty strong to me.
Review: Did a really nice job using these alot better then trying to measure and cut them out that way.

## Features

- PERFECT DRYWALL CUTOUTS you can be proud of in half the time with NO measuring! Powerful rare-earth magnets that find each other through drywall, eliminates the need for time consuming, error-prone measurements
- GET PROFESSIONAL RESULTS you can be proud of (even if its your first time hanging drywall) with foolproof and trustworthy patented technology that snaps into place; it shows you exactly where to cut
- 3 TARGETS INCLUDED fit standard single or multi-gang plastic boxes without plugs for both NEW construction or remodels; for receptacles already in place (restoration or rehab work), see our Plug Mark
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions..International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00YX8KZGO |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 669,179 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,501 in Tool Boxes |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,367) |
| Date First Available | 14 Jun. 2015 |
| Included Components | Includes 3 target magnets, 1 target locator magnet, and a rugged carrying case |
| Item Package Quantity | 1 |
| Item Weight | 454 g |
| Item model number | 8105 |
| Manufacturer | VOKY |
| Material | Plastic |
| Number of Pieces | 1 |
| Part Number | 8105 |
| Power Source | Hand Powered |
| Product Dimensions | 26.04 x 12.07 x 3.18 cm; 453.59 g |
| Size | 10 Count (Pack of 487) |
| Style | Locator Tool |

## Product Details

- **Brand:** Calculated Industries
- **Is electric:** Yes
- **Item weight:** 1 Pounds
- **Material:** Plastic
- **Number of pieces:** 1
- **Style:** Locator Tool
- **Unit count:** 1.0 count

## Images

![Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries - Image 1](https://m.media-amazon.com/images/I/41CIjZrKCNL.jpg)
![Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries - Image 2](https://m.media-amazon.com/images/I/41F-JawixPL.jpg)
![Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries - Image 3](https://m.media-amazon.com/images/I/41tThuAIXUL.jpg)
![Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries - Image 4](https://m.media-amazon.com/images/I/5131ionvuyL.jpg)
![Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by Calculated Industries - Image 5](https://m.media-amazon.com/images/I/51YlQdIcagL.jpg)

## Available Options

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

## Questions & Answers

**Q: I'm confused. The gang box sticks out a half inch from the studs. How do you install the drywall without first cutting the hole?**
A: the box is only 1/4inch past studs. not 1/2. the drywall will just float over the box. so when you hang the drywall, only use 3 or 4 screws- just enough to hold it in place. then use the magnet to find your box, and cut it out. then finish screwing in the drywall. This tool works great. i just did an entire house with absolutly zero problems

**Q: Will it work through osb**
A: On the back of the box it says the following:"Works on drywall, plywood, particle board, laminated flooring, Masonite, exterior siding, cement board, tile, and slate."Thanks,General Tool

**Q: What tool are you using to cut the sheet rock i feel like a dremel would cut right through the metal wire being used to hold the magnet to the box**
A: Commercial drywallers use drywall routers/Rotozips(large Dremels spinning at 9000rpm). But you can use anything. You will not come in contact with the inside of the box, maybe the tabs of the outside of box. The outside marker magnet is larger than the inside box magnet and spring tabs. If you are worried about even touching the outside tabs of an electrical box, set your depth on the bit to that of the drywall.

**Q: Does the electrical box have to be empty**
A: With this kit, yes the box would need to be empty, but they also make something called a plug mark that plugs into an existing wall outlet.  Of course that doesn't work for light switches. But there is always lipstick for those.http://www.amazon.com/gp/product/B00XUY9FB8?psc=1&redirect=true&ref_=od_aui_detailpages02

## Customer Reviews

### ⭐⭐ Review
*by M***T on 22 August 2020*

These looked great and would be a handy addition if your putting up your own drywall/gyprock in the USA. I got them but they do not fit the AU/NZ size standard size wall plates. I returned them with no issues. Bummer! The magnets seemed pretty strong to me.

### ⭐⭐⭐⭐ Review
*by A***N on 2 December 2022*

Did a really nice job using these alot better then trying to measure and cut them out that way.

### ⭐⭐⭐⭐⭐ Review
*by M***N on 21 June 2025*

J'ai pas le compas dans l'oeuil et mes ouvertures dans la plaque au plâtre était plus souvent qu'autrement aproximatives. On rénove notre sous sol et on gagne énormément de temp avec cet outil. c'est incroyablement simple et efficace. Je recommande a tous castor bricolleur. Ceci dit, même si c'est conçu pour des boitier en plastique ça fonctionne aussi avec les boitier en metal.

## Frequently Bought Together

- Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool – Powerful Rare-Earth Magnetic Targets (3) and Locator Kit
- Calculated Industries 8115 Multi Mark Drywall Cutout Locator Tool – Powerful Rare-Earth Magnetic Targets (2) and Locator Kit
- Upgrade 2 Pcs Square Slot Cutter Compatible for Dewalt 20V & Milwukee M18 Oscillating Multi-Tool to Cut-in Single Gang Wall Boxes,Outlet Cutter for Drywall,Efficient Carving Tool,Black

---

## 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.ie/products/105780187-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool](https://www.desertcart.ie/products/105780187-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-16*