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Thruthefence
06-09-2012, 12:05 PM
Can someone recommend a user-friendly computer based caliper program? By this I mean, a system you can measure objects "on screen" , say from a JPG file?

John Stevenson
06-09-2012, 12:17 PM
To save me putting credits up read this thread about post # 23 and on.

http://bbs.homeshopmachinist.net/showthread.php?t=27425

Thruthefence
06-09-2012, 12:44 PM
Thanks for the link, but what I am referring to, is a sort of caliper, that "floats" on the desktop, and can be calibrated to a known value, and moved around measuring objects on the screen.

dp
06-09-2012, 01:23 PM
http://www.iconico.com/caliper/

I use the Mac version and it works great. It is especially helpful if you include in your image a reference scale. Be sure to click the software tab to see all the other on-screen tools they have.

easymike29
06-09-2012, 01:45 PM
This is free and easy to use

http://www.convertjunction.com/download/jruler.zip

Gene

oldtiffie
06-10-2012, 04:28 AM
http://www.iconico.com/caliper/

I use the Mac version and it works great. It is especially helpful if you include in your image a reference scale. Be sure to click the software tab to see all the other on-screen tools they have.

Dennis.

I've seen but not used that before. My guess is that it is pixel-based andhas an accuracy of +/- 1 pixel. And if thats the case will not accuracy reduce with reducing screen resolution - and vice versa?

Can I scale it? ie span an oject on the screen and insert a scaling factor when I have physically measured a part? In both "X" and "Y"?

As I recall, Even had a pretty good suite of this and some other accessories or applications not all that long ago.

I'd like to see them again too.

Jaakko Fagerlund
06-10-2012, 05:03 AM
Related question, but is there any measuring software (preferably for Linux) that you give a picture of an object, define XYZ axes with drawing lines and define one dimension and then you can measure from any point to point in the picture and it gives the correct answer?

Picture an isometric view of a cube that has a non-center hole in top and you know the cube size but don't know the hole position?

Evan
06-10-2012, 05:07 AM
You have to be careful as these types of applications are favorites for including spyware and other garbage. This one is safe.

http://www.softpedia.com/get/Desktop-Enhancements/Other-Desktop-Enhancements/Designers-Ruler.shtml

Evan
06-10-2012, 05:11 AM
Related question, but is there any measuring software (preferably for Linux) that you give a picture of an object, define XYZ axes with drawing lines and define one dimension and then you can measure from any point to point in the picture and it gives the correct answer?

Sketchup does that as a native function called "Photo Match".

By the way, Sketchup just gained a lot more respectability. Google just sold the entire program and team to Trimble for something like 50 to 100 million dollars.

Peter.
06-10-2012, 05:37 AM
Really? I better get and download the latest 'free' version and copy it to my offline PC then - just in case :)

panchula
06-10-2012, 11:36 AM
It's possible to embed video in Axis.

http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Axis_Embed_Video

The code base is from http://code.google.com/p/camunits/

I dug out an old golf ball styles Logitech last week and getting it integrated into Axis is on my to do list for the summer.

-Mike

dp
06-10-2012, 11:37 PM
Can I scale it? ie span an oject on the screen and insert a scaling factor when I have physically measured a part? In both "X" and "Y"?


I can't tell you Tiffie, because I've recently upgraded my Mac OS and they don't yet have a version for this newer OS. There is a free demo for Windows, though.

The vendor claims no spyware, etc., and my experience bears that out. It's worth a try.

christiandersen
08-31-2013, 12:26 PM
You can measure easily with the tool: KLONK Image Measurement (http://www.imagemeasurement.com) there is a free, a trial and payable versions.

Forestgnome
08-31-2013, 12:40 PM
I use Meazure. I like that it has a zoomed image for increased precision. Free.
http://www.cthing.com/Meazure.asp

Mike Amick
08-31-2013, 02:35 PM
Just curious if you noticed someone had posted this same question a half hour before you.

Evan
08-31-2013, 03:43 PM
It is very easy to make your own on screen measuring tools. With Win 7 you can download a free on screen active desktop tool. This will display anything you want in a web page even if the web page is located locally. The web page can be stupid simple to display any local image you want including a picture of a ruler that has be sized to match the pixels per inch of your display.

All the web page needs to look like is this:



<html>
<body bgcolor="#000000">
<img src="f:\images\desktop\image.png">
</html>

The web page text may be worked on in notepad and should be saved with an .htm extension
The bgcolor command sets the background of the page to black but it can be any color. The colors are in two byte hex but can also be in standard colour names.
The img command tells where to find the image anywhere on the machine.

The Active Desktop tool has a setting for the URL of the web page which can be anywhere on your machine and it has settings for the X and Y size of the page, or in this case the image. This allows you to paste an image of anything anywhere on your desktop any time you want without involving the desktop background. It can easily be moved at any time the same as any gadget.

Active Desktop tool:

http://win7gadgets.com/tools-utillities/activedesktop.html#.UiI4YEA2i7Q