The process of checking the gathered sections of a book for correctness

-------------- is best suited for cutting a specific pattern on paper or board

----------- type of adhesive is used in perfect binding.

In screen printing, screens are used for very close register work, the allowable tolerance across the screen would be between

----------- occurs when the centre of mass of a roller does not match the rotational axis imposed by its supporting bearings.

In screen printing, the basic optimum exposure time is 4 minutes at a lamp distance of I meter and if the distance is increased to 2 meters. Calculate the new exposure time.