--- product_id: 68985071 title: "Smart Weigh CW-50G Carbon Steel 50g OIML Class M1: ± 3 mg Calibration Weight with Chrome Finish" brand: "smart weigh" price: "€ 15.66" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.hr/products/68985071-smart-weigh-cw-50g-carbon-steel-50g-oiml-class-m1 store_origin: HR region: Croatia --- # Smart Weigh CW-50G Carbon Steel 50g OIML Class M1: ± 3 mg Calibration Weight with Chrome Finish **Brand:** smart weigh **Price:** € 15.66 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Smart Weigh CW-50G Carbon Steel 50g OIML Class M1: ± 3 mg Calibration Weight with Chrome Finish by smart weigh - **How much does it cost?** € 15.66 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/68985071-smart-weigh-cw-50g-carbon-steel-50g-oiml-class-m1) ## Best For - smart weigh enthusiasts ## Why This Product - Trusted smart weigh brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Size:50g There is no room for error when it comes to precision calibration. It makes all the difference in a scale to provide the most accurate measurements. The Smart Weigh calibration weights are made of top quality carbon steel to ensure the utmost accuracy when it comes to recalibrating any digital scale. A chrome finish gives it a sleek look. Includes a protective cushioned case that keeps the weight firmly in place. The weights can be used for measuring laboratory, commercial, industrial, or educational purposes. Suitable for a digital scale, pocket scale, food scale, jewelry scale, reloading scale, etc. for accurate results. The weights are compact and portable. OIML Class M1: ± 3 mg. ## Features - Used for accurate scale recalibration to ensure most precise weighing and best performance for any of your professional or home precision needs. Crafted of high grade carbon steel for extra durability and has a chrome finish for a sleek look. Compact design for easy access and convenience. Ideal for commercial, industrial, lab, or educational calibration purposes to ensure the most consistent weight readings on many digital scales. Features a compact design with a convenient cushioned case that firmly secures and protects the calibration weight and makes it easy to storage. High performance OIML Class M1: ± 3 mg calibration weight offers a wide range of adjustment and testing calibration use. Flat top allows stacking. ## Images ![Smart Weigh CW-50G Carbon Steel 50g OIML Class M1: ± 3 mg Calibration Weight with Chrome Finish - Image 1](https://m.media-amazon.com/images/I/41slWvlRK4L.jpg) ![Smart Weigh CW-50G Carbon Steel 50g OIML Class M1: ± 3 mg Calibration Weight with Chrome Finish - Image 2](https://m.media-amazon.com/images/I/61JU5gmr4VL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ "OIML Class M1" in the product description is IMPORTANT *by N***A on Reviewed in the United States on November 3, 2015* There is really no point to use a calibration weight if the actual weight is not its nominal weight. OIML Class M1 is not just a geeky set of letters and numbers. It is the difference between a calibration weight that is useful to calibrate one of the "0.01 gram" read-out scales that Amazon sells and a weight that is not useful for that purpose.Recently, we purchased from Amazon an  Etekcity 500g Digital Pocket Scale, Stainless Steel, Backlit Display, Tare, Hold and PCS Features, 0.001oz Resolution . We also ordered a 500g calibration weight (-not- a Smart Weigh calibration weight), needed to calibrate that scale. Not paying sufficient attention -- our fault -- the calibration weight that we ordered was not an OIML Class M1 weight. (If it had been an OIML Class M1 weight, the 500g weight would have been accurate to plus or minus 0.025 grams, or 25 milligrams.) When we placed that nominally 500g weight on the nominally 500g capacity scale, the scale's display read O_Ld (overload). When we attempted to calibrate the scale with that same weight, the scale's calibration program never completed its cycle, even though we allowed it 24 hours to do so. (We have a separate review of the Etekcity scale under Amazon's listing for that scale, where more detail of our testing may be seen.)The website for Fisher Scientific has a downloadable PDF file (produced by Mettler Toledo) that lays out the tolerances for the OIML classes of weights. You need to consult that table (or one similar to it) to determine what OIML class of weight you need to calibrate a scale with a specific level of precision. We consulted that table and determined that we needed an OIML Class M1 weight to calibrate a scale with a maximum capacity in the range that we were looking for to a precision of 0.01 gram. (0.01 gram equals 10 milligrams.) We purchased this Smart Weigh calibration weight because we wanted to calibrate a scale that -reads- in 0.01 gram increments to be -accurate- within 0.01 gram.What a difference there was between our prior experience with the 500g capacity scale and 500g calibration weight and our experience when we used this Smart Weigh CW-200G OIML Class M1 calibration weight to calibrate a scale with a 300g maximum capacity. When we placed this Smart Weigh 200g calibration weight on the platform of a new but not recalibrated  ONE - My Weigh DuraScale D2 300g x 0.01g Digital Scale w/Rubber Case - Tough! , the display read 200.11 grams; after we calibrated the scale with the Smart Weigh calibration weight and then zeroed the display and placed the calibration weight on the scale, the read-out was exactly 200.00 grams. That -perfect- result was repeatable on several test tries. Using the same scale to weigh an uncirculated U.S. nickel, the display read out 5.00 grams, confirming that the calibration was correct.The OIML Class M1 specification is the spec that tells you that the calibration weight can be used to calibrate a scale with a maximum capacity similar to the capacities of the scales that we tested with 0.01g precision; accept nothing less. ### ⭐⭐⭐⭐⭐ GREAT /// A scale that ways grams is recommended *by K***N on Reviewed in the United States on August 3, 2016* I couldn't believe my scale was accurate! It has been knocked down, in toddler hands and more! To ship I need to know what the ounces and pounds are. I don't have a gram option so I should have bought maybe a different weight. So we weighed and I got a different number...went out line to a conversation chart an yes, it was accurate.☆ I like how the weight is protected inside a plastic cased that has a foam inside as an added measure of security / protection!○ I suggest if you buy this to have a scale that has the gram option as well. My error on picking this one but it works.☆○☆○☆ I TOOK IT TO MY LOCAL POSTAL OFFICE TO BE SURE ITS WEIGHS CORRECTLY AND IT DOES! ### ⭐⭐ Questionable build quality *by D***D on Reviewed in the United States on March 13, 2019* When I first got my Smart Weigh Calibration weight, I was cleaning it and a flake of metal came off the top edge. It was very thin, but this obviously alters the weight of a CALIBRATION WEIGHT.I should have returned it ASAP. I still have it and use it, but the accuracy of its weight will forever be in question. --- ## 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.hr/products/68985071-smart-weigh-cw-50g-carbon-steel-50g-oiml-class-m1](https://www.desertcart.hr/products/68985071-smart-weigh-cw-50g-carbon-steel-50g-oiml-class-m1) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-05*