# 500 g precision pocket scale > Weighs envelopes and card mailers to a hundredth of an ounce. - Scales, Starter pick - Typical UK price: $8 to $15 (a typical band, not a live price) - Platforms: Whatnot, eBay, Vinted, TikTok Shop, Depop, Etsy, Vestiaire Collective - Orders a week: 0–2000 - Checked October 7, 2026 Card orders often sit a fraction of an ounce from a postage price break. A precise small scale tells you whether a mailer stays in the cheaper weight step. ## Kit rankings - #2 in [Best shipping scale for selling from home](https://sellersetups.com/us/kit/scales) ## Setups - [Coin and jewelry selling desk](https://sellersetups.com/us/setups/coins-jewellery-desk): A precision scale, capsules, a light box for close-ups and a careful shipping routine, for selling coins and small jewelry from one desk. - [Crystal live-show garage for Whatnot and TikTok Shop](https://sellersetups.com/us/setups/crystal-live-shows-garage): Bulk tumbled stones in tubs, an overhead phone, LED panels and small boxes for running crystal live sales several nights a week at volume. - [eBay books, games and vinyl setup](https://sellersetups.com/us/setups/ebay-books-media): Two scales, rigid mailers and shelves sorted by code, so 20 to 80 books, games and records a week go out at the cheapest rate that fits. - [Handmade silver jewelry studio for Etsy and Depop](https://sellersetups.com/us/setups/etsy-silver-jewellery-maker): A gram scale, a light box, gift boxes and small flat mailers for makers selling their own rings, studs and pendants from a bench in the corner. - [Pro Whatnot streaming setup for card breaks](https://sellersetups.com/us/setups/pro-whatnot-streaming): A two-camera studio with app-controlled lights, a button pad for angles and a packing line, for card breakers shipping 80 to 300 orders a week. - [Whatnot card break setup for sports cards](https://sellersetups.com/us/setups/sports-card-breaks): An overhead rip camera, a sorting system for hits per buyer and flat mailer packing, for running baseball, basketball and football breaks on Whatnot and eBay. - [TikTok Shop live setup for beauty sellers](https://sellersetups.com/us/setups/tiktok-shop-beauty-starter): A ring light, a mic, a plain backdrop and protective packing for filming TikTok videos from one corner of your room. - [Whatnot card setup: starter kit](https://sellersetups.com/us/setups/whatnot-card-starter): Camera, lights and packing kit for running your first Whatnot card shows from a desk and shipping the orders next morning, on a starter budget. ## Cards, coins and jewelry near a price break You ship trading cards, coins, jewelry or stickers in envelopes and small mailers, where the weight sits close to the next ounce. A 500 g scale reading to 0.1 g (about 0.004 oz) tells you which side of the line you are on. Keep it beside a shipping scale as a second scale for small items. At $8 to $15, it costs less than one adjustment charge. ## Fine steps, tare and a tray lid Buy one with a 500 g maximum, 0.1 g steps, an ounce mode, a tare button and a lid that doubles as a weighing tray. A backlit screen helps under a desk lamp. Most models include a calibration weight or ask for one; the listing says which. Calibration keeps the fine reading honest. ## Weighing mailers at the desk Keep it on the desk beside your card mailers. Weigh a finished mailer with the label on; if it sits close to the next ounce, swap a toploader for a thinner sleeve or a lighter mailer. Calibrate it with the supplied weight when you move it or change the batteries. Keep it away from fans and drafts, which can shift a light reading. ## Pairing it with a platform scale The 66 lb digital shipping scale weighs boxes and larger packages. Make it your main scale and add this one for small mailers. The 110 lb shipping scale suits heavier or bulkier boxes. Neither platform scale reads small mailers as finely as this one. ## USPS limits and small mailers USPS sets weight, size and thickness limits for letters, large envelopes and packages, and both the limits and the prices change; check the current USPS rules before you settle on your mailers. Weigh a full sample of each mailer setup once and note the weight. From then on you know at a glance which price step each order lands in. ## Common mistakes - An item weighed without its mailer, label and card protection reads light. Weigh the sealed envelope. - Anything over 500 g (about 17.6 oz) belongs on a shipping scale; overloading this one can damage the sensor. - Recalibrate with the supplied weight after you move the scale, or readings drift. - A fan or an open window makes readings jump, so weigh in still air. ## Guides - [How to ship Pokémon cards in the US](https://sellersetups.com/us/guides/how-to-post-pokemon-cards): Penny sleeve, toploader, team bag and a rigid mailer: the layers that get a Pokémon single to a US buyer flat, plus when an envelope stops being enough. - [Pirate Ship vs platform labels: which to use](https://sellersetups.com/us/guides/pirate-ship-vs-platform-labels): Poshmark's fixed label, Mercari and eBay labels, Whatnot's per-show labels, and the orders where Pirate Ship's free USPS and UPS rates save money. - [How to ship jewelry safely in the US](https://sellersetups.com/us/guides/post-jewellery-safely): Pick the USPS service and coverage that fits a ring or a gold coin, pack it so nothing rattles, and keep the proof you need if a claim comes. - [Trend reselling and spotting fakes](https://sellersetups.com/us/guides/trend-reselling-fakes): Labubu, Sonny Angels, Pokémon cards and sneakers: read demand from live viewer counts, check stock before you buy, and stay on the right side of US law. - [The July 2026 USPS under-1-lb change for sellers](https://sellersetups.com/us/guides/usps-under-1-lb-change): Since July 12, 2026, commercial Ground Advantage dropped its ounce tiers under a pound. What it costs card, jewelry and accessory sellers, and how to adjust. ## Questions ### Why do I need such fine accuracy? Card mailers often sit a hair from the next ounce. A scale that rounds to whole ounces or grams can show 3.9 oz when the envelope weighs a fraction over 4. ### Can it replace my shipping scale? No. It stops at 500 g, about 1.1 lb, so keep a platform scale for boxes and packages. ### How do I calibrate it? Most models have a calibration mode and come with a weight. Follow the instructions in the box after changing batteries or moving it. ### Will a mailer fit on the platform? Small mailers and envelopes usually fit on the tray or lid. A larger envelope can overhang if it stays clear of the desk.