1) кнопка
2) ручка; рукоятка
3) маховичок; грибок
4) головка ( винта, штифта )
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- catch knob
- control knob
- feed-reversing knob
- feed-selector knob
- feed-shifting knob
- hand knob
- jig knob
- knurled knob
- locating knob
- lock knob
- locking knob
- membrane knob
- mushroom knob
- palm grip hand knob
- programming knob
- retention knob
- selector knob
- star knob
- stem knob
- tapered knob
- threaded knob