1. They usually have knurled heads so they can be easily removed. 2. Begin cranking the knurled knob that controls the depth of the iron. 3. A small, knurled nut threads onto the barrel to protect the threading. 4. Most are available with a knurled aluminium body, similar to Swiss Army knives. 5. The one-piece striker terminated in a Springfield-like knurled cocking-piece. 6. Adjustments by using the included knurled ring operate the potentiometer inside the TTL-Metered Pentaprism. 7. Finally, the flagship pen, the 701 has a knurled grip and is completely stainless steel. 8. At the front end was a knurled metal cap which was used to retain the removable barrel. 9. Alternatively, the gas regulator can be unlatched and turned by hand with aid of the knurled surface. 10. Perhaps it counts as knurled . ( talk ) 17 : 45, 31 December 2011 ( UTC) 
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