[ros-users] Calibration Plate

von Wichert, Georg Georg.Wichert at siemens.com
Wed Nov 3 19:34:44 UTC 2010

Yes,scaling can be an issue. If you find someone with a "printing mindset" who can send PS or PDF to the printer and where you can tell the actual printing guy not to scale, the scaling will likely be not an issue. We had such a service in our neighborhood, but it unfortunately closed down in the meantime.

-----Original Message-----
From: ros-users-bounces at code.ros.org [mailto:ros-users-bounces at code.ros.org] On Behalf Of Hang Dong
Sent: Wednesday, November 03, 2010 8:29 PM
To: ros-users at code.ros.org
Subject: Re: [ros-users] Calibration Plate

Thanks for the information.

One issue we had with our printout is that there is always small amount of scaling from print shops, hence having to measure the size of square again and introduce a bit more uncertainty. Ideally we want one made with high level of flatness and precision, i found this one from cognex: 
http://www.cognex.com/support/downloads/File.aspx?d=1910 24x24 calibration plate , but unfortunately it also comes with some proprietary marking. 
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