Hanging Letter Scale Postman 100. This item, the Postman-100, is discontinued. It can measure up to 100g. This is a Showa-retro postal scale, used to measure envelopes by clipping them to the clip. Approximate size of the main body: Approximately 9cm x Approximately 5.5cm It's compact, so it doesn't take up much storage space. Stored at home. Keywords: Weighing Weight Letter scale Letter Mail Envelope Hanging scale