back gear
noun
(in a lathe) one of several gears for driving the headstock at various speeds.
OTHER WORDS FROM back gear
back·geared, adjectiveWords nearby back gear
back focus,
back foot,
back formation,
back forty,
back four,
back gear,
back green,
back hack,
back in circulation,
back in harness,
back light
Example sentences from the Web for back gear
Referring again to Fig. 494, g′ is the pinion to drive the back gear while g receives motion from the back-gear pinion.
Modern Machine-Shop Practice, Volumes I and II |Joshua Rose