Most home shippers need a scale that reads light mailers finely, handles the occasional heavy box, and keeps the number visible under a big parcel. Here's how to check each of those from the spec sheet.
1. Capacity: cover your heaviest parcel, with headroom
Pick a capacity comfortably above your heaviest regular shipment. In our catalog that ranges from 25 lb (DYMO M25) to 150 lb (Brecknell). A higher capacity often comes with coarser steps, so don't overbuy if you mostly ship envelopes.
2. Display increments: how finely it reads
For letters and light mailers, look for 0.1 oz steps in the low range. Several scales use two ranges—the My Weigh Ultraship U2 reads 0.1 oz in its lower range and 0.2 oz above. Brecknell's 150 lb PS-USB reads in 0.05 lb steps (0.8 oz), which suits boxes, not letters.
3. Published tolerance (if any)
Display steps are not accuracy. DYMO publishes a tolerance for the M25 (±0.2 oz below half capacity, ±0.4 oz above); most others don't. See capacity vs resolution vs accuracy.
4. Can you see the number under a box?
A fixed display disappears under anything larger than the platform. For medium and large boxes, look for a detachable, remote or movable display: the Ultraship U2 and 75 (2 ft cord), Rollo (separate reading panel), Accuteck W-8580 (remote display) and Brecknell PS150 Slimline (movable indicator).
5. Platform size
A box can overhang the platform if it sits centered and doesn't touch the desk, but a bigger platform is steadier. Only some makers publish it: Ultraship U2 6.7 × 7.1 in, Ultraship 75 7.9 × 6.2 in, Brecknell PS-USB 12 × 14 in.
6. Power, auto-off and USB
Power: USB (DYMO M25), AC adapters and batteries vary; the Ultraship 75 listing we mapped doesn't include its adapter.
Auto-off: DYMO shuts off after 3 minutes; Accuteck after 90 seconds on batteries (always on with AC); Brecknell's is configurable.
USB data: DYMO's M25 is a USB HID scale; Brecknell's PS-USB presents a virtual serial port. Whether your shipping software reads either is up to that software.
7. Legal for trade
Only the Brecknell PS-USB documents NTEP approval in our catalog, and Brecknell notes it isn't legal for trade until certified by a Weights & Measures official. Most home shippers don't need this.
Postage reality check
A scale helps you enter the right weight, but it can't guarantee correct postage or prevent a carrier adjustment. Weigh the fully packed parcel, and if you're close to a weight break, allow for the scale's tolerance.