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Calibration line much too small #3

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mirabilos opened this issue Dec 17, 2016 · 3 comments
Open

Calibration line much too small #3

mirabilos opened this issue Dec 17, 2016 · 3 comments
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@mirabilos
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The line is only about 1.4cm long. Even if I measure it as well as I can, I get half a cm error on the 10 cm vertical ruler your äpp displays.

Also, calibration is horizontal only. Some devices have differing dpi horiz/vert so you probably should measure both (and offer to only use the vertical (longer line possible) value if they're close.

@Yonjuni
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Yonjuni commented Dec 17, 2016

Thanks, for the comment. I guess the problem did not occur on any of our test devices.

I guess changing the calibration to a longer vertical line will improve the situation

@mirabilos
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mirabilos commented Dec 18, 2016 via email

@jondo
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jondo commented Jan 22, 2018

This really is a mayor problem, rendering the ruler useless.

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