Persian drill
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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 Jewellery ( UK) or jewelry (U.S.) consists of decorative items worn for personal adornment, such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes. From a wester ...
making and dentistry. A ratcheting screwdriver with a 'spiral ratchet' mechanism may be used as a Persian drill.


References

Tools Hole making {{tool-stub