knurl
/nəːl
/noun
A small projecting knob or ridge, especially in a series around the edge of something.When I grabbed the gleaming chrome door handle, I felt machined bumps, or knurls, that provide extra grip....
- These knurls are slightly harder and in most applications deliver a substantial increase in tool life.
- The slots for the knurls are not critical and can easily be cut using a hacksaw and a file.
Derivatives
knurled
/ adjective ...- The blade is held by pins and maintained in place by threaded studs and knurled clamp nuts.
- A simple twist of the knurled handle locks the collar in any position along the shaft.
- Turning a knurled adjustment wheel moves the right side scope for individual adjustment.
Origin
Early 17th century: apparently a derivative of knur.