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A Straight Line
The Constrained Ball is one of those concepts I can easily see myself buying from a late night infomercial. I’m not saying it’s bad but the novel approach to a simple kind of problem is endearing. Fitted with a rubber gasket, the gadget helps you draw straight lines and indicates the length. OMG, is this the end of the ruler’s dominance?!? No but I quite like this concept. I’m a stickler for drawing straight lines. It’s either gotta be straight and perfect or it’s a no-go for me.
Designer: Giha Woo
84 Comments »
Pedro Dordio says
I very much doubt that this will help draw straight lines. I mean, if you know how to draw straight lines freehand sure, it helps, but if you don't, than this does nothing to help you. You'll still end up with a "crooked" line.
But I like the concept. Nice work
Pedro Dordio says
I very much doubt that this will help draw straight lines. I mean, if you know how to draw straight lines freehand sure, it helps, but if you don't, than this does nothing to help you. You'll still end up with a "crooked" line.
Pedro Dordio says
I very much doubt that this will help draw straight lines. I mean, if you know how to draw straight lines freehand sure, it helps, but if you don't, than this does nothing to help you. You'll still end up with a "crooked" line.
dror says
I wonder if it really works. if it does then i must have it as soon as possible!
hairmare says
I don't get why the line would be really straight with this?!? The thing does look nice for measuring but thats about all I see. I'll stick to a ruler for now.
Conway Anderson says
I want to buy this
Alaor says
This makes no sense.
Catherine says
It looks like a good concept but I suspect that you have to have pretty steady hand to be able to use it properly. Maybe even steady enough not to need this in the first place?
Allan MacGregor says
ohh!! I wan one
Pedro Dordio says
I very much doubt that this will help draw straight lines. I mean, if you know how to draw straight lines freehand sure, it helps, but if you don't, than this does nothing to help you. You'll still end up with a “crooked” line.
But I like the concept. Nice work
Pedro Dordio says
I very much doubt that this will help draw straight lines. I mean, if you know how to draw straight lines freehand sure, it helps, but if you don't, than this does nothing to help you. You'll still end up with a “crooked” line.
Pedro Dordio says
I very much doubt that this will help draw straight lines. I mean, if you know how to draw straight lines freehand sure, it helps, but if you don't, than this does nothing to help you. You'll still end up with a “crooked” line.
dror says
I wonder if it really works. if it does then i must have it as soon as possible!
hairmare says
I don't get why the line would be really straight with this?!? The thing does look nice for measuring but thats about all I see. I'll stick to a ruler for now.
Conway Anderson says
I want to buy this
Jon Xuereb says
impractical it would spin around the pen
Alaor says
This makes no sense.
Roly Ferre says
Where do I get one, how much it cost? Very good for doing quick sketches
Catherine says
It looks like a good concept but I suspect that you have to have pretty steady hand to be able to use it properly. Maybe even steady enough not to need this in the first place?
Allan MacGregor says
ohh!! I wan one
Elyas says
this design is good concept.
Justin_Ge says
It is a very good concept and makes a lot of sense, also emphasized again that designer should think more about ordinary life.
So I really like this concept.
WIll says
That is ridiculous. How is this an improvement on a ruler?
Jon says
because rulers are two-handed and sometimes require cumbersome manoeuvring of either the paper or the pen and ruler. This concept is great, but you'd probably need triangulation to keep it straight, so another wheel in line with the first one is necessary.
Jon Xuereb says
impractical it would spin around the pen
Roly Ferre says
Where do I get one, how much it cost? Very good for doing quick sketches
Elyas says
this design is good concept.
Justin_Ge says
It is a very good concept and makes a lot of sense, also emphasized again that designer should think more about ordinary life.
So I really like this concept.
WIll says
That is ridiculous. How is this an improvement on a ruler?
Jon says
because rulers are two-handed and sometimes require cumbersome manoeuvring of either the paper or the pen and ruler. This concept is great, but you'd probably need triangulation to keep it straight, so another wheel in line with the first one is necessary.
bjorn says
Swing and a miss!
mif991 says
It probably helps a bit to make straighter lines but not as perfect as a ruler. A good line still depends on the draftperson's steady hand. As a school project it is a good attempt.
bjorn says
Swing and a miss!
mif991 says
It probably helps a bit to make straighter lines but not as perfect as a ruler. A good line still depends on the draftperson's steady hand. As a school project it is a good attempt.
kevy-kev says
two wheels in series would fix the problem (rotation)… give me my money now!
kevy-kev says
two wheels in series would fix the problem (rotation)… give me my money now!
karie says
what if u start with wrong angle?
karie says
what if u start with wrong angle?
Stevieboy says
appears that the downward triangular pressure distributed between the pen point and wheel needs to be kept even to assist with line drawing but how many of us draw this way? would like to try it out…..or maybe see a video clip…not sure you'd be able to sketch with it though…mmmm…
Chung Dha Lam says
I can draw straight line on 1mm spaced grid paper too. Nothing beats the old straight rulers.
anon says
Not so good, it won't keep a line straight – you only need to look at the old hand-held scanners to see the problems. I'm also doubtful of how well it could measure a line – again look to analog map measuring tools and their relative inaccuracy. Then again, maybe I'm the only one who uses CAD for precise drawings these days.
Stevieboy says
appears that the downward triangular pressure distributed between the pen point and wheel needs to be kept even to assist with line drawing but how many of us draw this way? would like to try it out…..or maybe see a video clip…not sure you'd be able to sketch with it though…mmmm…
Golan says
The concept does indeed make sence, It is not a wheel, it is a gear, a gear which creates traction. The traction would help you keep your hand steady. Obviously if you have Parkinson disease this wont help you, but then again a straight line is the least of your worry's at that point.
anon says
I suggest you know a little more about gears to call this one – it has straight knurling for traction but in no way would keep ones hand steady. That would require at least 1 more point of contact with the paper surface to give the minimum needed for stability. All in all, this is far more expensive an idea than simply using a ruler (or CAD).
Chung Dha Lam says
I can draw straight line on 1mm spaced grid paper too. Nothing beats the old straight rulers.
anon says
Not so good, it won't keep a line straight – you only need to look at the old hand-held scanners to see the problems. I'm also doubtful of how well it could measure a line – again look to analog map measuring tools and their relative inaccuracy. Then again, maybe I'm the only one who uses CAD for precise drawings these days.
Golan says
The concept does indeed make sence, It is not a wheel, it is a gear, a gear which creates traction. The traction would help you keep your hand steady. Obviously if you have Parkinson disease this wont help you, but then again a straight line is the least of your worry's at that point.
anon says
I suggest you know a little more about gears to call this one – it has straight knurling for traction but in no way would keep ones hand steady. That would require at least 1 more point of contact with the paper surface to give the minimum needed for stability. All in all, this is far more expensive an idea than simply using a ruler (or CAD).
Dan says
This can't possibly work.
chisel says
the thing is a cool concept, i really like its simple design but rationalizing it i realize the the ruler would beat it where referencing another point is concerned for example connecting accurately two known points due to the lack of an angular absolute. however it surely looks workable to prevent unsure wobbly lines.
Dan says
This can't possibly work.
chisel says
the thing is a cool concept, i really like its simple design but rationalizing it i realize the the ruler would beat it where referencing another point is concerned for example connecting accurately two known points due to the lack of an angular absolute. however it surely looks workable to prevent unsure wobbly lines.
Jay says
No way do to draw a straight line by freehand, I mean "exactly straight". It's gonna end up with ruler anyway.
Jay says
No way do to draw a straight line by freehand, I mean “exactly straight”. It's gonna end up with ruler anyway.
the pieman says
this is even worse that the spring loaded potato masher, why invent something that requires power and has moving parts and only sort of works when the ruler clearly is the weapon of choice here.
resign , immediately
the pieman says
this is even worse that the spring loaded potato masher, why invent something that requires power and has moving parts and only sort of works when the ruler clearly is the weapon of choice here.
resign , immediately
Mlah says
As a measuring tool sure it might be handy if you could fit the circuitry in such a tiny place. If you really want to draw a straight line you don’t even need a ruler, just use a piece of paper, or a book, or another pencil, or any number of straight edges that you are likely surrounded by.
Steve says
This would not work. I’ll stick with CAD when I need perfect drawings, and if I need a straight line I’ll grab my stapler or other notebook or coaster or you know… ruler.
Zorxis Goobligik says
A long roller (or two) instead of a little wheel would have more contact with the paper and be more stable… that really is the only way I see this design having a chance of working properly. Perhaps some sort of spring/suspension between the pen and said roller to accommodate different writing angles/pressures?
Mlah says
As a measuring tool sure it might be handy if you could fit the circuitry in such a tiny place. If you really want to draw a straight line you don’t even need a ruler, just use a piece of paper, or a book, or another pencil, or any number of straight edges that you are likely surrounded by.
Mike R says
For those who said you will still need a ruler to draw a straight line, a draftsmen doesn’t use a ruler to to draw a line; he uses a triangle.
Steve says
This would not work. I’ll stick with CAD when I need perfect drawings, and if I need a straight line I’ll grab my stapler or other notebook or coaster or you know… ruler.
Zorxis Goobligik says
A long roller (or two) instead of a little wheel would have more contact with the paper and be more stable… that really is the only way I see this design having a chance of working properly. Perhaps some sort of spring/suspension between the pen and said roller to accommodate different writing angles/pressures?
@uopjo6 says
There goes our touches
@uopjo6 says
There goes our touches
Hank says
For an artist with one usable hand this looks like a good idea. Where can I buy or find one to evaluate?
Hank says
For an artist with one usable hand this looks like a good idea. Where can I buy or find one to evaluate?
La says
I think it is a great concept. But like all inventions, some quirks need to be worked out which is expected. But for people to outright bash this design is sad. I’m wondering what did they invent? Trust and believe if they invented something others would poke holes in it also. Perfection does not exist. Give the designer a break. Instead of poking all of those holes in his design, design something better to address your concerns! But usually people who speak badly about what others have created can not create a better product.
mlah says
The thing is your artist didn’t invent anything himself. He just said “Wouldn’t it be cool to have a device that would make you draw straight lines and magically measure distance, it’ll look like this. Man I am the best inventor ever” The artist doesn’t understand the basics of the necessary component and ignores things like practicality and the cost versus the benefits. Honestly its insulting to all those who actually work hard making real products. Its not about perfection its about artists pretending to be something they aren’t.
Charley says
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Mike R says
For all those experts who said you need a ruler to draw a straight line, a draftsmen doesn’t use a ruler he uses a triangle
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