Difference between revisions of "Double-Knock mechanism"
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! Brand !! Model name !! Additional Features | ! Brand !! Model name !! Additional Features | ||
|- | |- | ||
| − | | Alvin ||Draft-Tec Retrac || | + | | Alvin ||Draft-Tec Retrac || 4mm drafting tip |
|- | |- | ||
| Aristo || DK2 || Twist-extendable eraser | | Aristo || DK2 || Twist-extendable eraser | ||
| + | |- | ||
| + | | Baile || Double Nib 538 || | ||
|- | |- | ||
| Colleen ||Jib WK-816 || | | Colleen ||Jib WK-816 || | ||
| Line 19: | Line 21: | ||
| Cult Pens || Cult Pencil || Side button to retract the tip; metal body | | Cult Pens || Cult Pencil || Side button to retract the tip; metal body | ||
|- | |- | ||
| − | | Fuji Corona ||No. 205-03 Mecha-Pen || | + | | Fuji Corona ||No. 205-03 Mecha-Pen || 4mm drafting tip |
|- | |- | ||
| Linex || DP 1000|| Side button to retract the tip | | Linex || DP 1000|| Side button to retract the tip | ||
|- | |- | ||
| − | | Linex || DP 2000|| Twist-extendable eraser | + | | Linex || DP 2000|| Twist-extendable eraser; 4mm drafting tip |
|- | |- | ||
| Manufactum || Druckbleisift Messing|| Side button to retract the tip | | Manufactum || Druckbleisift Messing|| Side button to retract the tip | ||
| Line 31: | Line 33: | ||
| Ohto || Horizon || Auto advance mechanism; side button to retract the tip; metal body | | Ohto || Horizon || Auto advance mechanism; side button to retract the tip; metal body | ||
|- | |- | ||
| − | | Ohto || OP-500 || Spring loaded clip to retract the tip | + | | Ohto || OP-500<ref>https://unsharpen.com/what-is-a-double-knock-pencil/</ref> || Spring loaded clip to retract the tip |
|- | |- | ||
| Olympia || Double Knock || | | Olympia || Double Knock || | ||
| Line 50: | Line 52: | ||
|- | |- | ||
| Pentel || TranXition || Spring loaded clip to retract the tip | | Pentel || TranXition || Spring loaded clip to retract the tip | ||
| + | |- | ||
| + | | Pensan || IQ - My-IQ - IQ Duo || Twist-extendable eraser. Ergonomic double injection grip section made by Kotobuki Co. Ltd Japan. | ||
|- | |- | ||
| Pilot || Vanishing Point || Lead hardness indicator | | Pilot || Vanishing Point || Lead hardness indicator | ||
Latest revision as of 10:54, 12 June 2023
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[edit]
| Brand | Model name | Additional Features |
|---|---|---|
| Alvin | Draft-Tec Retrac | 4mm drafting tip |
| Aristo | DK2 | Twist-extendable eraser |
| Baile | Double Nib 538 | |
| Colleen | Jib WK-816 | |
| Colleen | Jib WK-1051 | |
| Cult Pens | Cult Pencil | Side button to retract the tip; metal body |
| Fuji Corona | No. 205-03 Mecha-Pen | 4mm drafting tip |
| Linex | DP 1000 | Side button to retract the tip |
| Linex | DP 2000 | Twist-extendable eraser; 4mm drafting tip |
| Manufactum | Druckbleisift Messing | Side button to retract the tip |
| Niji | Grip 350DX | Twist-extendable eraser |
| Ohto | Horizon | Auto advance mechanism; side button to retract the tip; metal body |
| Ohto | OP-500[1] | Spring loaded clip to retract the tip |
| Olympia | Double Knock | |
| Pacific Arc | RDP-405 | |
| Pacific Arc | RDP-605 | Twist-extendable eraser |
| Paper Mate | Apex | Twist-extendable eraser |
| Penac | Double Knock | |
| 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) |
| Pentel | TranXition | Spring loaded clip to retract the tip |
| Pensan | IQ - My-IQ - IQ Duo | Twist-extendable eraser. Ergonomic double injection grip section made by Kotobuki Co. Ltd Japan. |
| 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 |
| Platinum | W-Knock MH-120 | |
| Pyramid | SP-60 Double Knock | |
| Rotring | Esprit double push R5033312 | Side button to retract the tip |
| Rotring | Initial R504340 | |
| Rotring | Rapid | Twist-extendable eraser |
| Serve | Swell | Twist-extendable eraser |
| Senator | Avantic | |
| Spaper | Technic Retro | |
| Stabilo | Microtom 3365 | |
| Staedtler | Retro 778 | |
| Staedtler | Retro de Luxe 778 25 | Premium chromed steel body |
| Sun-Star | W Knock Sharp | |
| Tomato | Hidden Nib HN-50 | |
| Tombow | Protect SH-WPS | |
| You & Me | DBL-KNOCK |