You can also purchase postage direct from the U.S. Postal Service, using their "Stamps by Mail", just call up you local Post Office, or when you drop by ask for the mail-in "Stamp By Mail" envelope. You mail in your personnel check made out to the U.S. Postal Service, and your stamps will be delivered to your house with the daily mail.

As for weight, all scales are checked daily, with the certified weights that each post office has. The scales are attached to the window clerks computer that keeps records of all sales for accounting purposes, as well as figuring the postage, and fees for other services.

U.S. Postal Service moves more mail on a daily basis then all the other Postal Service in the world (combined).

~Parnelli