| 21. | In olden days, grain was ground on manually operated rotary querns.
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| 22. | The tower was manually operated and had 12 lamps, three in each direction.
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| 23. | The driving trailer also has a manually operated brake using the disc brakes.
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| 24. | They are the only manually operated sea lock gates in England.
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| 25. | The magnification can be varied by manually operating a zoom mechanism.
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| 26. | The Walther Volkssturmgewehr VG 1 is a manually operated bolt-action rifle.
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| 27. | All thirty-three locks were manually operated ( Yeater 5 ).
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| 28. | Manually operated, it was also known as the Ox Box.
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| 29. | This is a manually operated gun, with a gun crew on an open mount.
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| 30. | Use of DROs is not limited to manually operated machines.
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