A specific type of weighing instrument designed for accurately measuring the weight of letters and small packages intended for airmail service, commonly produced by the Triner Scale & Manufacturing Company. These instruments were prevalent during the mid-20th century when airmail was a premium and often costly delivery option, requiring precise postage calculation to avoid surcharges or rejection.
These instruments played a crucial role in facilitating efficient and accurate mail processing. Their use ensured that senders applied the correct postage for expedited delivery, thereby preventing delays and additional fees. The utilization of such devices reflected the growing importance of rapid communication and the expanding airmail network, contributing significantly to global commerce and personal correspondence.
