Difference between revisions of "Double-Knock mechanism"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
[[File:Double-Knock pencils.JPG|thumb|right|Some double-knock pencils. Left to right: three Niji Grip 350DX (the black one is a vintage model), two Niji Grip 0.9mm, a Pilot Delful The Shaker, and a Serve Swell]] | [[File:Double-Knock pencils.JPG|thumb|right|Some double-knock pencils. Left to right: three Niji Grip 350DX (the black one is a vintage model), two Niji Grip 0.9mm, a Pilot Delful The Shaker, and a Serve Swell]] | ||
| − | '''Double-knock''' or '''vanishing point''' (also '''dual action'''), is a particular type of mechanism that allow the tip of a mechanical pencil to fully retract inside the body of the pencil. | + | '''Double-knock''' or '''vanishing point''' (also '''dual action'''), is a particular type of mechanism that allow the tip of a [[mechanical pencil]] to fully retract inside the body of the pencil. |
In a double-knock pencil, a deep click of the push button extends the whole tip section, while further short clicks allow the lead to come out (like a regular mechanical pencil). | In a double-knock pencil, a deep click of the push button extends the whole tip section, while further short clicks allow the lead to come out (like a regular mechanical pencil). | ||
In order to retract back the tip (when it's in the extended position), usually another deep push of the button is needed. | In order to retract back the tip (when it's in the extended position), usually another deep push of the button is needed. | ||
Revision as of 23:47, 26 July 2018
Double-knock or vanishing point (also dual action), is a particular type of mechanism that allow the tip of a mechanical pencil to fully retract inside the body of the pencil. In a double-knock pencil, a deep click of the push button extends the whole tip section, while further short clicks allow the lead to come out (like a regular mechanical pencil). In order to retract back the tip (when it's in the extended position), usually another deep push of the button is needed.
Double-knock pencil models
| Brand | Model name | Additional Features |
|---|---|---|
| Pilot | Vanishing Point | Lead hardness indicator |
| Pilot | Automac | Auto advance mechanism; metal body |
| Pilot | Delful The Shaker | Shaker mechanism with lead lock when the tip is retracted |
| Pentel | Graph Gear 1000 | Spring loaded clip to retract the tip; metal body; lead hardness indicator |
| Pentel | Technica-X | |
| Pentel | Flex Fit | Spring loaded clip to retract the tip; ergonomic rubber grip (also customisable in the Flex Fit II) |
| Rotring | Rapid | Twist-extendable eraser |
| Niji | Grip 350DX | Twist-extendable eraser |
| Ohto | Horizon | Auto advance mechanism; side button to retract the tip; metal body |
| Papermate | Apex | Twist-extendable eraser |
| Serve | Swell | Twist-extendable eraser |
| Cult Pens | Cult Pencil | Side button to retract the tip; metal body |