Variable line spacer is used :
ATo stop the cylinder in a correct place
BTo erase the matter
CTo change the ribbon indicator
DNone of the above
ATo stop the cylinder in a correct place
BTo erase the matter
CTo change the ribbon indicator
DNone of the above
Related Questions:
Platen knobs are also known as :
(1) Carriage
(2) Thumb wheel
(3) Main spring
(4) Margin