whats a dual egt gauge? and what does it do?

its two gauges in one so you dont clutter up the dash

come on man you could have google'd it, thats what i did

ive seen it but what does it do what purpose does it serve? and is it worth it i mean those kinda things?

Its just one gauge that would have two displays on it... like oil temp and pressure on the same gauge, and like drftk1d said the only reason they exist is to save space..
Rather simple concept really.
May cars come with them from factory, like the 240z gauge cluster.
http://www.markhaag.com/240Z/images/Projects/Interior/IMG_1855%20(Medium).JPG

but whats it measuring and watching?

but whats it measuring and watching?

:banghead: egt's and something else...