Quoin (printing)
A quoin is a device used to lock printing type in a chase in letterpress printing. Quoins are pairs of wedges, facing opposite directions.
A quoin is a device used to lock printing type in a chase in letterpress printing. Quoins are pairs of wedges, facing opposite directions.
A quoin is a device used to lock printing type in a chase in letterpress printing. Quoins are pairs of wedges, facing opposite directions.
Source: Wikipedia "Quoin (printing)" · CC BY-SA 4.0
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