A facility used for impressing pre-paid postage rate on letters is called?
Answer Details
The facility used for impressing pre-paid postage rates on letters is called a "franking machine." It is a type of special printing machine used by businesses to apply postage to envelopes or packages before they are sent through the mail. The franking machine prints a unique mark or impression onto the mail that shows the amount of postage paid, and this can help businesses save time and money by avoiding the need to buy and affix postage stamps manually.