Question

What are Thumb Wheels also known as?

• A. Carriage Knobs
• B. Platen Knobs
• C. Line Space Levers
• D. Detent Rollers

Answer 1

Answer:

B. Platen Knobs

• Thumb wheels, in the context of typewriters, are small knobs located on either side of the platen (the roller that the paper wraps around).

• They are designed to be turned by the user's thumb and forefinger.

Alternative Name: Platen Knobs

• The more common and technically accurate term for these components is Platen Knobs.

• This name directly reflects their function: to control the movement of the platen.