In letterpress printing, line length and column widths are measured in terms of: 

(A) Inches

(B) Ems

(C) Centimeters

(D) Characters

Correct Ans: (B)

Explanation:-

In letterpress printing, printers measure line length and column widths using Ems. This unit, based on the width of the letter “M” in a particular typeface, ensures precision in layout and text alignment. By using Ems, printers maintain consistency and readability in printed materials.