[image|3406256]
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It looks like its (almost) exactly at the center. Slightly lower.[br]
I've measured it ''very scientifically'' using Windows Power Toys virtual ruler, and on my screen device height was ~560 pixels, so dead center should be 280, but is ~6 pixels lower. What gives us displacement of 1-2 mm towards the bottom. [br]
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source: https://support.google.com/product-documentation/answer/14725410#zippy=%252Cenglish-manuals%252Cfrench-manuals%252C%2Cenglish-manuals