Good Morning. 

Does anyone have experience with these?

Nautiz X8

https://www.handheldgroup.com/rugged-computer/handheld-pda/nautiz-x8/#tab=tecspec

http://ruggedpcreview.com/3_handhelds_handheldus_nautiz_x8.html

https://www.handheldgroup.com/rugged-solutions/Customer-Solutions/nautiz-x8-extreme-environment-surveying-with-rugged-handhelds/

Bruce