File talk:Comparison CD DVD HDDVD BD.svg

I think that a 'micro' (mu) prefix is missing from 3 measurements, the CD pitch and spot size, and the DVD track pitch. These are shown as 1.6, 1.6 and 1.1 *metres*. Other dimensions are correctly prefixed as millimeteres or nanometres.

I also think the ' laser spot size (⌀) ' character (phi?) is not being shown. I have looked in Firefox 57.0.4 and Chrome 63.0 on Windows 7, and Android app, and they all look the same.

I do not have the tools to modify the image to address these issues.

Thanks John