--- product_id: 260876784 title: "Donegan Optical Optivisor No.5 8\" Magnifier" brand: "donegan optical" price: "Rp4162297" currency: IDR in_stock: true category: "Donegan Optical" url: https://www.desertcart.id/products/260876784-donegan-optical-optivisor-no-5-8-magnifier store_origin: ID region: Indonesia --- # 200mm (8") precise focal length 2.5x magnification power Fully adjustable, comfy headband Donegan Optical Optivisor No.5 8" Magnifier **Brand:** donegan optical **Price:** Rp4162297 **Availability:** βœ… In Stock ## Summary > πŸ”Ž See more, do more β€” magnify your mastery with Donegan OptiVISOR No.5! ## Quick Answers - **What is this?** Donegan Optical Optivisor No.5 8" Magnifier by donegan optical - **How much does it cost?** Rp4162297 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/260876784-donegan-optical-optivisor-no-5-8-magnifier) ## 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 - β€’ **Durable & Convenient:** Lightweight design with tilting visor and protective carrying case for on-the-go pros. - β€’ **Tailored Fit Comfort:** Adjustable padded leather band fits all head sizes, even over glasses. - β€’ **Hands-Free Efficiency:** Ergonomic headband design lets you work longer without fatigue or interruptions. - β€’ **Modular Magnification:** Interchangeable lens plates let you customize your zoom for any project (sold separately). - β€’ **Crystal-Clear Precision:** Ground & polished optical glass lenses deliver razor-sharp clarity for every detail. ## Overview The Donegan Optical OptiVISOR No.5 is a premium hands-free binocular magnifier featuring 2.5x magnification with a precise 8" focal length. Crafted with ground optical glass lenses, it offers exceptional clarity for detailed tasks like jewelry-making, watch repair, and electronics inspection. Its fully adjustable, padded headband ensures all-day comfort, even over glasses, while interchangeable lens plates provide customizable magnification options. Lightweight and durable, it includes a tilting visor and protective case, making it the go-to tool for professionals and hobbyists demanding precision and convenience. ## Description Product Description The Donegan OptiVISOR is a hands-free, headband binocular magnifier that has optical glass lenses that are ground and polished into prismatic lenses for quality and clarity, and is available in multiple dioptric strengths (indicated by the number in the model) which provide specific magnification power (X) at specific focal lengths, or 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, book-reading, print inspection, and stamp-collecting.The OptiVISOR magnifier features replaceable binocular lenses that have beveled edges that are mounted in an interchangeable plastic frame. An adjustable headband with padded leather comfort band conforms to a variety of head sizes and provides comfort for hours of continuous use. It can be worn over prescription or safety eyeglasses. A durable, plastic visor tips up above the forehead when not in use. Spring-loaded pivot screws hold the headband in a raised or a forward-facing position. The magnifier weighs 0.67 lbs., and 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”). See the magnification chart. 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) decreases. 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, needlework, artwork, reading, print inspection, and stamp-collecting.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) 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?OptiVISORInstruction manual Set Contains: 1 x Optivisor Magnifier No.5 (8") ## Features - Optical Glass Binocular Magnifier - 2.5 x magnification with a focal length of 200mm (8") - A precision instrument that improves vision and increase your efficiency - Fully adjustable to fit any size, quickly and easily - Interchangable lens plates are available-Sold separately (OP1763/03) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0015IN8J6 | | Best Sellers Rank | #110,109 in Toys ( See Top 100 in Toys ) #96 in Hobby Tool Magnifiers | | Brand | Donegan Optical | | Color | clear | | Date First Available | 6 August 2012 | | Item Weight | 0.28 g | | Material | Varied | | Model Number | DA-5 | | Product Dimensions | 20.32 x 29.21 x 5.08 cm; 0.28 g | | Special Features | Adjustable head band, Interchangeable lense plate, Lenses made from ground glass, Light weight and comfortable, Tilts up for convenience | ## Product Details - **Batteries required?:** No - **Brand:** Donegan Optical - **Colour:** clear - **Item weight:** 0.01 Ounces - **Lens material:** Glass ## Images ![Donegan Optical Optivisor No.5 8" Magnifier - Image 1](https://m.media-amazon.com/images/I/419iFJtSCVL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Donegan DA-5 OptiVisor Headband Magnifier, 2.5x Magnification, 8" Focal Length - Donegan LP1 OptiLOUPE Magnifier for OptiVISOR, Adds 2.5X Magnification - Quasar Led Lighting System for Optivisors --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.id/products/260876784-donegan-optical-optivisor-no-5-8-magnifier](https://www.desertcart.id/products/260876784-donegan-optical-optivisor-no-5-8-magnifier) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-08*