Looking on the internet deeply has found these results:

in center of the slide is the most popular phrase on the web.

at center of the slide 11 results on the web	in center of the slide 13 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Feb 8, 2015 ... ... grooves connected to each other with a long groove arranged at center of the slide surface and connected through an opening to the system ...	scale. 6 = Photoelement / Photo sensor. Maßstab zentral zwischen den Führungen. Scale in center of the slide ... Image center. If image size smaller/larger than slide, it's always in center of the slide. Layout mutual support. Switch layout, fallback layout custom when not ... ... Reference mark. 3 = Glasmaßstab / Glas Nov 24, 2004 ... Type material: The holotype female, in center of the slide (marked), one paratype female and an immature on the same slide, Peru, Oxypampa, ...

at center of the slide

11 results on the web

in center of the slide

13 results on the web

More popular!

Feb 8, 2015 ... ... grooves connected to each other with a long groove arranged at center of the slide surface and connected through an opening to the system ...

scale. 6 = Photoelement / Photo sensor. Maßstab zentral zwischen den Führungen. Scale in center of the slide ...
Image center. If image size smaller/larger than slide, it's always in center of the slide. Layout mutual support. Switch layout, fallback layout custom when not ...
... Reference mark. 3 = Glasmaßstab / Glas
Nov 24, 2004 ... Type material: The holotype female, in center of the slide (marked), one paratype female and an immature on the same slide, Peru, Oxypampa, ...