The invention relates to a franking device, which customarily made of a postage meter and a piece of mail processing a direction which comprises a piece of mail to be franked with a correct postage stamp, including a correct proves and the transport device is provided for the mail item comprises. The piece of mail processing a direction generally has, furthermore, a weighing device, and a measuring device for determining the size (length, width and / or thickness) of the item of mail to be franked on. Dollars a it is therefore the object of the present invention to provide a franking device, which offers a cost-effective option, a high throughput of mail items, and providing the franking avoids the disadvantages of prior devices. The object is usd according to the invention with a franking device with the features according to claim 1, dissolved. Advantageous developments are described in the subclaims. Dollars a it is a postage meter machine for franking mail items in at least two operating modes is described, with means for determining a proves in the first operating mode with the use of a first table of fees, with y - postage values, wherein a postage value by a combination of n - input variables is determined, with a second operating mode, in which the means for determining the postage values a second table of fees, with y - x - postage values, wherein a postage value by a combination of n - m - input variables is determined, where n, m, x, y ..
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