How to show Gridlines in rendered images?

[lys.pcube]

I am currently using Navisworks Simulate 2014.
When I export an image using Viewport as the Render, the grid lines will show. Refer to viewport - grids show.png. However, the resolution of the image at 2048 by 1024 is not sufficient, i.e. when I scroll in, the objects will be pixelated. Since the maximum size for the export is only 2048 by 2048, I tried using the Rendered Image option.
When exporting an imagine using the Rendered Image, I can increased the size to 4096 by 2048 and the objects appear better when scrolling in. Refer to rendered image - grids not showing.png. However, now the grids do not appear in the render. Is it possible to export the rendered image with the grids? Or does anyone have an alternative workaround?

[Joel.Inkster]

I am having the same issues.  Can anyone provide a work around.

[Patrick_Aps_9121]

The only workaround I can think of is extruding your axis lines into tiny tubes in AutoCAD.