For the guys who run multiple temp gauges, it'd almost be worth to contact Autometer. Isspro, or whoever to see if they could custom make a 270 degree sweep electronic gauge that's just labeled "TEMP" that reads from like 50 degrees Fahrenheit to 250.
I know that Autometers electrical temp gauges, it's a 1 wire sender; so you can just go any store that sells multiple position toggle switches and just connect each sender to whichever switch position you want. The downside is you'll need to be able to get more than 1 sender for how many temps you plan on monitoring.
Just an idea..