Simple tilting balance for determining whether an envelope weighs less than a standard postal weight comprises an envelope support rack and a balance weight equal to the standard envelope weight on either side of a pivot point

摘要

Device for checking envelope weights consists of a rocking balance. A first variant comprises a holding rack (2) in which an envelope is placed, with a balance weight on the other arm of the balance. A second variant has a support in which coins are inserted to make up the balance weight. The device serves to determine if envelopes are less than a given standard weight.