Discussion
Dandy roll is used for
Answer: C
A dandy roll is used to make a watermark.
On a Fourdrinier paper machine, the dandy roll is a light wire-covered cylinder that rides on the wet web of fibres. A raised design on its surface displaces fibres so that the paper is thinner there, and the design shows as a lighter watermark when the sheet is held to the light. The dandy roll also gives the wove or laid pattern.
It does not colour the paper, it is not a stencil, and 'rotating' simply describes how it moves, not what it is for.
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