Radiator cap with temp gauge

Has anyone used one of these?
I remember reading about them in some mag....
It would help in confirming what my instument cluster is saying...right now I'm thinking I'm getting a false reading on the gauge.
Its hovering near the 230* mark with or without the air on.
But heck, its been 112* during the day out here anyway....:flame:
Anyone?
Rick R

google search turned up this for $20.

http://www.jcwhitney.com/autoparts/...tom-0/p-2011078/N-111+600001645+10201/c-10101

looks cool

Anyone use this?
What pressure is the system in a '96 anyway? :dunno:
And I suppose we are 'large domestic'....sounds like my dog!
Rick R

16#,I saw them in the JEG,S catalog.
Wayne

Hmm. Interesting idea, but I've already got a "non-contact" infrared thermometer that works well, and I can't use that cap on RENIX anyhow.

5-90