How much does type weigh?
1 sq. inch of “foundry” type weighs 4.179 oz. (+/-) or 118.5gm This by weighing unused 18pt ATF Baskerville M’s. Therefore, there is 3.828 sq. inches of printing surface/lb. of foundry type. Or 8.438 sq. inches of printing surface/kilo of foundry type. (This allows you to visualize how much type you get when looking at the price per pound or kilo) The weight of monotype is usually less as the castings are less dense, but it’s probably fractional.