erro - fail
- external lock washer
- external measurement subsystem
- external member
- external memory
- external micrometer
- external modulation
- external optics
- external parameters
- external pressure angle of the inserted blades
- external profiling
- external programming
- external quenching
- external read-in device
- external recessing
- external reference datum
- external register diameter
- external scheme
- external sensor
- external storage
- external surface broaching
- external tab washer
- external teeth
- external test equipment
- external thread
- external thread gage
- external threading
- external tool
- external tool holder
- external tool housing
- external toothing
- external turning
- external turning tool
- external wheelhead
- external work
- external-compression inlet
- external-contact friction gearing
- external-internal lock washer
- externally actuated clutch
- externally generated program
- externally mounted
