A postal scale is a device used to measure the weight of packages and letters before sending them through the mail. It helps individuals and businesses determine the correct postage needed, ensuring that items are sent at the appropriate rate. Postal scales can be digital or mechanical and often feature a platform where the item is placed for weighing. Using a postal scale can save time and money by preventing underpayment or overpayment of postage. Many postal scales are compact and easy to use, making them suitable for home or office settings. They are especially useful for those who frequently ship items through services like the United States Postal Service or FedEx.