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Seeing the cross pattern will depend on the distance that you have your 3 element lenses focused, also you will need to be wearing your laser safety glasses to see the true focus at full power, you should wear them anytime when viewing the spot except at longer distances.
Here's a video I made trying to demonstrate that.
This is a NUBM44 with a 3 element and a 3.3X sanwu expander.
Here's a video I made trying to demonstrate that.
This is a NUBM44 with a 3 element and a 3.3X sanwu expander.
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