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Old 22nd Jan 2015, 10:58 pm   #92
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Default Re: Technology related anachronisms on TV and in films etc.

My theory about why right hand threads are most common is this.

The first threads would have been cut freehand on a lathe. For a right handed person it's normal to have the lathe head stock on the left. Cuts are made towards the headstock and that produces a right hand thread.

If you watch the TV series "Wish Me Luck" there's a scene where a radio operator is asked to repair a set. She picks up a screwdriver and pretends to undo some screws. but she rotates the screwdriver clockwise.
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