this is AWESOME!

on 20 cm 2 mm to long!

perfect here! 19"

way too big on 13"

it's 7 mm longer on my 15"

perfect on a 24"

5mm under 25 cm on my 26 inch

0.5mm to short on my 22"

perfect

It's perfect on my 13.3" Macbook.

Perfect on 23"

I guess its right but I have no way to tell

2mm to small on 21" crt

DIRECTIONS!!

you have to enter the actual viewable portion of your monitor not the whole size.

Example:
I have a 21" crt but there is a Black box on the outside of where my screen starts to work. it just happens to be .5 inch on both sides so
21 minus 1 =20 inch monitor size.

perfect on my 15"

How do you know if its wrong? why would you look up an online ruler if you had a way to measure it?

I Agree With Robby, It Kinda Makes This Website Obsolete! You Guys Just Put Yourself Out Of Jobs, Way To Go...!

i dont like it your the worst person ever i hate you

perfect on a 22"

Perfect on 19" 1440x900

I can't see it

hard to see

fake-doesn't wrk fr me

it is so big i had too get another ruler too measure it

I have no idea what to do?????

omg i'm so excited for my gems to come in the mail

Assuming 8.5in wide paper is exactly that, came out 1mm over, so pretty accurate. 14.1in laptop display.

this is great... helped me finish organic chem lab

How long did you say a bed bug is? ... oh, crap. It got away!!!

22" is perfect i think

about perfect on my 15.4" laptop screen, on google chrome

Juuust about perfect on my 17", only a mere 0.9 of a cm larger than it should be but I certainly find it accurate.

works perfect on my 15 in laptop but the scroll bar gets in the way so when i move it over a tad bit i know its on 15 or hell of alt close

This changes in respect to your browser sometimes, because browser can display at different sizes

1mm long on 19"

IMMMMMMMM MADDDDDDD.
im trying to use this for my homework but ...
do you have any different type of cm rulers because this one only has 10ths!
I needd 12thss!
PLEASE.

this works!! 18'' safari!!

dang i dont know how big my moniter is! how am i supposed to measure it without a ruler?

slightly too long x2.

Isn't this just fake. You put in different screen sizes and it just enlarges.
FAKE FAKE FAKE!!!
#43 people #43

#35

This is perfect i dont know what the fuck is wrong with some of these idiots.
Perfect on my 19" monitor NOT widescreen.

^ By the way im using Google Chrome if thats imporant

exact right on my 57 inch pc :)

ghjcgjkjgknlj,;ghgljk

wow dude

It's a little short, but good enough :D

oooooooooooooooookkkkkkkkkkkkkkkkk

Welll, I Didnt Measure It.. But It Loooks Absolutely Correct On My 14.1" screen. And Also I Was Using Google Chrome.. If That Seems To Be Important? :S

This is goofy - I am LOOKING FOR A RULER!! How can I measure the exact dimensions of my screen WITHOUT A RULER??? Maybe the screen size should be requested as "Number of ballpoint pens lined up end-to-end across the screen (but not down). 2.25 pens, to be exact.

kool

butterzz crap

my monitor in 16inchess ???

muchh betterr

yeeeyyyy!! 60th comment :P

horrible no write measurements except on 13"

horrible no write measurements except on 13"

there is this boy in my class who is so cute but i cant tell him i like him because i am too popular

people who go on this website r freshis ,loners , and sados

Perfect on 14.1 inch

lol at 64, since he's here himself

I read my Dell manual, specifications page. It said the screen is 15.4". The on-screen rule is exactly right. I can think of lots of times I can't be bothered to get a ruler but want to know the size of things I'm looking at on Ebay etc.. Guess it takes imagination to see the value in something.

Perfect on 19''

7inches umad?

woooo i has a 2 cm long nail

which i just broke off :P but it was 2cm before i broke it

Dead on for a 23" screen. Thanks!

WEll i dEw aqREE wiTh tHE oTHeR qUy
cUz diZ iS FAkE . WhO iNvEnTeD diZ cRaP :p