Persian drill
http://dbpedia.org/resource/Persian_drill an entity of type: WikicatTools
A Persian drill is a drill which is turned by pushing a nut back and forth along a spirally grooved drill holder. It was formerly used for delicate operations such as jewellery making and dentistry. A ratcheting screwdriver with a 'spiral ratchet' mechanism may be used as a Persian drill.
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Persian drill
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903791
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895667571
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A Persian drill is a drill which is turned by pushing a nut back and forth along a spirally grooved drill holder. It was formerly used for delicate operations such as jewellery making and dentistry. A ratcheting screwdriver with a 'spiral ratchet' mechanism may be used as a Persian drill.
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798