When thesewere manufactured at the foundry they were cataloged at the block height. The below conversions are the block height: 12 pt is approx 1/8 inch 18 pt is approx 1/4 inch24 pt is approx 5/16 36 pt is aprrox 1/2 inch 48 pt is approx 5/8 inch 60 pt is approx 13/1672 pt is approx 1 inch 84 pt is approx 1 3/16 inch. The item "Webb 12 pt. Letterpress Metal type Printers Type" is in sale since Monday, January 4, 2021. This item is in the category "Business & Industrial\Printing & Graphic Arts\Printing & Graphic Essentials\Type, Cuts & Printing Blocks".The seller is "larrybball" and is located in Portland, Oregon. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.