---
product_id: 3056905
title: "Donegan CO-5 Clip-On Binocular Magnifier, 2.25X Magnification, 8\" Focal Length"
brand: "donegan optical"
price: "€ 63.88"
currency: EUR
in_stock: true
reviews_count: 8
category: "Donegan Optical"
url: https://www.desertcart.fi/products/3056905-donegan-co-5-clip-on-binocular-magnifier-2-25x-magnification
store_origin: FI
region: Finland
---

# 8" focal length for versatile close-up focus 2.25X magnification for crystal-clear detail Clip-on design for hands-free, seamless use Donegan CO-5 Clip-On Binocular Magnifier, 2.25X Magnification, 8" Focal Length

**Brand:** donegan optical
**Price:** € 63.88
**Availability:** ✅ In Stock

## Summary

> 🔎 Elevate your detail game—see what others miss!

## Quick Answers

- **What is this?** Donegan CO-5 Clip-On Binocular Magnifier, 2.25X Magnification, 8" Focal Length by donegan optical
- **How much does it cost?** € 63.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/3056905-donegan-co-5-clip-on-binocular-magnifier-2-25x-magnification)

## Best For

- donegan optical enthusiasts

## Why This Product

- Trusted donegan optical brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flip & Focus:** Lens plate easily tilts away when not needed—stay sharp without interruption.
- • **Universal Fit:** Attaches to your eyeglasses or included frame for instant upgrade on the go.
- • **Portable Powerhouse:** Lightweight design with protective case—take precision optics anywhere.
- • **Strain-Free Viewing:** Ground & polished prismatic lenses reduce eye fatigue during extended use.
- • **Effortless Precision:** Clip-on binocular visor delivers hands-free magnification, perfect for multitasking pros.

## Overview

The Donegan CO-5 Clip-On Binocular Magnifier offers 2.25X magnification with an 8" focal length, featuring ground and polished prismatic lenses for enhanced clarity and reduced eye strain. Its innovative clip-on design fits over eyeglasses or the included frame, enabling hands-free use with a flip-away lens plate for convenience. Lightweight and portable, it’s ideal for professionals and hobbyists requiring precise, comfortable close-up viewing.

## Description

The Donegan clip-on, binocular, hands-free magnifier with frame has a dual acrylic lens system with optical-grade lenses ground and polished into prismatic lenses, and is available in multiple colors, and multiple dioptric strengths (indicated by the number in the model) which provide specific magnification power (X) at a specified distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, fly-tying, book-reading, print inspection, and stamp-collecting.The clip-on, binocular, lightweight (0.417 lbs) magnifier features binocular lenses that come with a frame and clip that attaches to the frame or eyeglasses. The magnifier can be worn over prescription or safety eyeglasses, and has the ability to flip up when not in use. Spring-loaded pivot screws hold the headband in a raised or a forward-facing position. The magnifier is available in assorted colors such as black, and blue. It comes housed in a protective shell and carrying case. It has a one-year limited warranty. Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification.Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry inspection and fabrication, watch-making,Determining MagnificationDiopter Magnification Focal length (Distance from object) Sample view 20/20 vision 20" (50.8cm) 2-diopter lens 1.50X 20" (50.8cm) 3-diopter lens 1.75X 14" (35.56cm) 4-diopter lens 2.00X 10" (25.4cm) 5-diopter lens 2.50X 8" (20.32cm) 7-diopter lens 2.75X 6" (15.24cm) 10-diopter lens 3.50X 4" (10.16cm) needlework, artwork, fly-tying, electrical inspection, reading, print inspection, and stamp-collecting.Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.What’s in the Box?Clip-on binocular magnifierFrameFitted, plastic carrying caseInstruction manual

Review: Excellent. - These are relatively comfortable and work very well for hands-free magnification of close objects. I'm 40 and use them for soldering and work on small models, and for that purpose they are simply a lifesaver. They are surprisingly well-made and well-designed -- I don't think you can do better for twenty bucks. Originally I considered buying the full OptiVisor contraption, which may be great, but I'm now fully satisfied with these. Note these unfortunately DO NOT have glass lenses, as the top description states... The lenses are acrylic.
Review: cheap and flimsy - These felt really flimsy and wouldn't stay put on my face. I returned right away.

## Features

- Eyeglass clip-on binocular visor with 2.25X magnifying lens plate for hands-free viewing
- Ground and polished glass prismatic lens for improved focus and reduced eye strain
- Clips on to eyeglasses or to included eyeglass frame
- Lens plate tilts out of way when not needed
- 8" focal length for a variety of uses

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006O8RSC |
| Batteries Required? | No |
| Best Sellers Rank | #276,044 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9,315 in Lab Instruments & Equipment |
| Brand | Donegan Optical |
| Color | Assorted |
| Date First Available | February 24, 2007 |
| Global Trade Identification Number | 00633096000861 |
| Handle Material | Acrylic |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Item model number | CO-5 |
| Lens Material | Acrylic,Glass |
| Magnification Strength | 2.25 x |
| Manufacturer | Donegan Optical |
| Product Dimensions | 10 x 6.22 x 1.3 inches |
| UPC | 063830286570 633096000861 |

## Product Details

- **Batteries Required?:** No
- **Brand:** Donegan Optical
- **Color:** Assorted
- **Item Weight:** 8 ounces
- **Lens Material:** Acrylic,Glass

## Images

![Donegan CO-5 Clip-On Binocular Magnifier, 2.25X Magnification, 8" Focal Length - Image 1](https://m.media-amazon.com/images/I/41ht2b2HjkL.jpg)
![Donegan CO-5 Clip-On Binocular Magnifier, 2.25X Magnification, 8" Focal Length - Image 2](https://m.media-amazon.com/images/I/71N1P9W7spL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent.
*by K***! on September 27, 2017*

These are relatively comfortable and work very well for hands-free magnification of close objects. I'm 40 and use them for soldering and work on small models, and for that purpose they are simply a lifesaver. They are surprisingly well-made and well-designed -- I don't think you can do better for twenty bucks. Originally I considered buying the full OptiVisor contraption, which may be great, but I'm now fully satisfied with these. Note these unfortunately DO NOT have glass lenses, as the top description states... The lenses are acrylic.

### ⭐⭐ cheap and flimsy
*by A***N on October 11, 2023*

These felt really flimsy and wouldn't stay put on my face. I returned right away.

### ⭐⭐⭐⭐⭐ Great for beaders!
*by L***A on January 2, 2011*

This is the second pair of Donegan Clip-On Magnifier's I own. I am an avid beader with fading eyesight who needs magnification in order to work close up. You can use the magnifiers without the glass frame by clipping them to your glasses, but I prefer to keep the magnifier attached to the lightweight plastic frames that come with the set. I put these on over and behind my regular glasses, and then swing the magnifier down in front of my usual lenses. When I want to look out it is very easy to just flip the magnifier up and out of the way. I have owned magnifiers that involve headbands but they give me a headache after a while. The magnifier section can be removed from the glasses and folds down into a small case. This makes it easy to take them when I travel. There are many much more expensive magnifiers out there, but these are great for the price and despite heavy use over more than two years they still work fine. There is more than one magnification. Mine are 2X. I love them so much I got a second pair.

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-23*