Are the Stewart Warner gauges on this site (specifically boost and oil pressure) electronic or mechanical?

If not electronic, what would be a good low budget electronic gauge? I've heard that mechanical parts can brake off and cause issues...

Thanks...

 

how about contacting them and asking

 

I mean stewart warner in general..

 

I have a SW boost gauge. Yeah, it is mechanical but it works well. Granted, once I started getting more serious mods and engine tuning, I might want something a little more accurate but they are great gauges for the money.

 

The only problem that I had with my SW boost gauge is that it didn't come zeroed so I had to get a replacement one. Other than that it has worked out great.

 

any worried about mechanical pieces falling off? I've been warned about that happening with the oil pressure sensor