http://www.proofficesupply.com/blog/how-does-the-post-office-determine-that-the-correct-postage-has-been-affixed/ Thu, 17 May 2012 22:51:03 +0000 http://wordpress.org/?v=2.7 hourly 1 http://www.proofficesupply.com/blog/how-does-the-post-office-determine-that-the-correct-postage-has-been-affixed/comment-page-1/#comment-2546 Lizz K Mon, 19 Apr 2010 23:49:46 +0000 http://www.proofficesupply.com/blog/how-does-the-post-office-determine-that-the-correct-postage-has-been-affixed/#comment-2546 yes they do. and stamps have special ways of telling a machine how much they're worth.. the post office has there ways they use all kinda of equipment to measure size and weight. all companies who ship do of some type or another. i see a post office at work is amazing all their machines.<a href="http://www.greattoolsusa.com/other-furniture-4384"> Lizz K</a> yes they do. and stamps have special ways of telling a machine how much they’re worth.. the post office has there ways they use all kinda of equipment to measure size and weight. all companies who ship do of some type or another. i see a post office at work is amazing all their machines. Lizz K

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