01Platform or pocket
A platform scale handles boxed trainers, bundles of clothes and anything up to its limit. A pocket scale reads to a tenth of a gram, so you can tell whether a card mailer sits a gram or two under a weight band.
Keep both if you post both: the pocket scale for Large Letters and the platform for parcels.
02Weighing before you buy postage
Weigh the packed parcel, with the label and tape on, before you buy postage. Boxes and bubble wrap add more weight than the item alone suggests.
Check the weight bands on the carrier’s current price guide. Royal Mail’s Large Letter limit is 750 g, for example.
03Keeping it accurate
Tare the scale on a flat surface and check it now and then with something of known weight, like an unopened bag of sugar.
Replace the batteries when the display dims, because the reading drifts on a weak battery.