Best thing to do would be referencing the Game Mastery Guide for quick stat blocks.
Equipment wise, there is little published regarding Numeria specific equipment. Check around online for steam punk/techno junk stuff and you should be good to go.
Laser wands, medical scanners, coins that shimmer in the dark, and mech-like armors are good examples of what might be found there.
If you don`t like the technology-magic crossover that Numeria has, you can simply roll back Numeria to before the big UFO crashed, and it becomes a fairly ordinary Kellid barbarian nation.
Yeah, the book more or less gives nothing but a picture of a dude and a circle. So you have to decide what kind and level of tech you want there and how it works on your own. We're talking about it in another thread right now.
Honestly it just reshaping magic rules, sort of. THat is how I handle it really and also remember not every single person is rolling around with alien tech. Just the elite but a few examples of what I am talking about.
Laser Gun can be a modified Wand of Scorching Ray with less charges that requires a battery.
A Laser sword can be a +1 brilliant fiery keen long sword that only operates a certain amount of rounds before requiring to charge or have a battery replace.
Of course Detect Magic won't work on them or anti-magic field.