Persian drill
Appearance
(Redirected from Push drill)
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Furkadlo_z_0211.jpg/90px-Furkadlo_z_0211.jpg)
A Persian drill is a drill which is turned by pushing a nut back and forth along a spirally grooved drill holder.[1] It was formerly used for delicate operations such as jewellery making and dentistry.[2] A ratcheting screwdriver with a "spiral ratchet" mechanism may be used as a Persian drill.
References
[edit]- ^ Brown, Henry T. (1868). Five hundred and seven mechanical movements. Brown & Seward. p. 33. OCLC 6821027.
- ^ Nagyszalanczy, Sandor (2000). The Art of Fine Tools. Taunton Press. p. 84. ISBN 978-1-56158-361-4.