auto - base
- auto feeder
- auto-synchronous motor
- autocorrelation function
- autofeed drifter
- autogenous healing
- automated correction
- automatic (automatic release) disconnection
- automatic brake controller
- automatic break out cathead
- automatic casing cutter
- automatic connecting coupling
- automatic control pump
- automatic coupling
- automatic door
- automatic drilling tool feed controller
- automatic drive
- automatic duckbill
- automatic dump
- automatic feed
- automatic feed drill
- automatic feed; automatic drilling tool feed control (adjustment)
- automatic firedamp detector
- automatic gain control (adjustment)
- automatic idler
- automatic inertia drive
- automatic loading
- automatic loading device
- automatic measuring device
- automatic oil-flow controller
- automatic ram pile driver
- automatic recorder
- automatic recording indicator
- automatic retraction device
- automatic scales
- automatic sprinkler
- automatic telpher
- automatic timing device
- automatic tipping
- automatic training idler
- automatic viscosity controller
